{"title":"Atomic Studs \u0026 Bolts","description":"","products":[{"product_id":"306695","title":"Atomic Barra Sump Cross Bolts Kit","description":"\u003cp\u003eSet of M10 flanged sump cross-bolts to suit Barra engines, all models.\u003c\/p\u003e","brand":"Atomic Performance Products","offers":[{"title":"Default Title","offer_id":42816322961479,"sku":"306695","price":69.0,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0585\/8751\/2903\/files\/Atomic_Barra_Sump_Cross_Bolts_Kit.png?v=1779748477"},{"product_id":"306681-k","title":"Atomic Crank Bolt Kit","description":"\u003cp\u003eHarmonic balancer bolt\/washer kit suit Ford AU-on 6 cyl. Comprises high tensile M14 bolt, M14 Nordlock and machined CRMO washer. \u003cbr\u003e\u003cbr\u003eFor an even heavier duty option see our billet bolt version.\u003c\/p\u003e","brand":"Atomic Performance Products","offers":[{"title":"Default Title","offer_id":42816322994247,"sku":"306681","price":84.9,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0585\/8751\/2903\/files\/atomic_barra_harmonic_balancer_bolt_kit_1.jpg?v=1779748478"},{"product_id":"306655","title":"Atomic BMW M57 Tool Steel Head Stud Kit","description":"\u003cp\u003eAtomic M57 H13 Tool Steel Head Stud Kit\u003c\/p\u003e\n\u003cp\u003eAs used in countless Ford Barra engines well over 1500hp! These have been developed and continuously updated to make them stronger, better finish and easier to install than other aftermarket options. The studs are made out of a high quality H-13 tool steel and then heat treated to improve strength and mitigate cracking from brittleness. \u003cbr\u003e\u003cbr\u003eThe studs are designed with a bottoming tip to avoid over loading the lower threads. The studs are m12x1.5 thread into the block and are 163mm from the bottoming tip to the top of the thread at the nut end. \u003cbr\u003e\u003cbr\u003eThe kit is provided with oversize washers with a 28mm OD to help distribute the higher clamp force more evenly. We typically install these studs at 100ft-lbs but they can be taken higher if you want to extract maximum clamp without moving to larger studs. Also available in M14 size to suit higher output engines\u003c\/p\u003e\n\u003cp\u003e\u003cbr\u003eStud length is 163mm with bottoming tip\u003cbr\u003eM12x1.5 thread in block\u003cbr\u003eComes with\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e14 x H13 Tool Steel Studs \u003c\/li\u003e\n\u003cli\u003e14 x12pt Nuts \u003c\/li\u003e\n\u003cli\u003e14 x 28mm OD hardened washers and a tub of moly paste.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e","brand":"Atomic Performance Products","offers":[{"title":"Default Title","offer_id":42816323027015,"sku":"306672","price":590.0,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0585\/8751\/2903\/files\/IMG_6423_3bff437f-0864-4223-a6fe-a3323e3f9d1e.jpg?v=1779748479"},{"product_id":"306670-sohc","title":"Atomic SOHC INTECH H13 Tool Steel 12mm Headstud Kit","description":"\u003cp class=\"\" data-end=\"356\" data-start=\"251\"\u003e\u003cstrong data-end=\"356\" data-start=\"264\"\u003eAtomic Head Stud Kit – Ford SOHC Intech 6-Cyl | 12mm H13 Tool Steel | Ultra High Tensile\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp class=\"\" data-end=\"689\" data-start=\"358\"\u003e\u003cstrong data-end=\"374\" data-start=\"358\"\u003eDescription:\u003c\/strong\u003e\u003cbr data-end=\"377\" data-start=\"374\"\u003eWhen you’re running boost or high cylinder pressure through your Ford \u003cstrong data-end=\"480\" data-start=\"447\"\u003eSOHC Intech 6-cylinder engine\u003c\/strong\u003e, factory head bolts become a serious weak link. The \u003cstrong data-end=\"577\" data-start=\"533\"\u003eAtomic 12mm H13 Tool Steel Head Stud Kit\u003c\/strong\u003e is designed to eliminate that risk with unmatched clamping strength (for its size), fatigue resistance, and thermal stability.\u003c\/p\u003e\n\u003cp class=\"\" data-end=\"1015\" data-start=\"691\"\u003eManufactured from \u003cstrong data-end=\"746\" data-start=\"709\"\u003eultra high tensile H13 tool steel\u003c\/strong\u003e, these studs deliver consistent torque, resist stretch under pressure, and maintain head gasket seal even in high-horsepower turbo applications. Whether you're building a strong street combo or prepping for track abuse, this kit is a must-have for top-end reliability.\u003c\/p\u003e\n\u003chr class=\"\" data-end=\"1020\" data-start=\"1017\"\u003e\n\u003ch3 class=\"\" data-end=\"1047\" data-start=\"1022\"\u003e✅ \u003cstrong data-end=\"1045\" data-start=\"1028\"\u003eKey Features:\u003c\/strong\u003e\n\u003c\/h3\u003e\n\u003cp class=\"\" data-end=\"1478\" data-start=\"1048\"\u003e✅ Suits Ford SOHC Intech 4.0L 6-cylinder engines\u003cbr data-end=\"1099\" data-start=\"1096\"\u003e✅ Manufactured from \u003cstrong data-end=\"1137\" data-start=\"1119\"\u003eH13 tool steel\u003c\/strong\u003e – ultra high tensile \u0026amp; heat-resistant\u003cbr data-end=\"1178\" data-start=\"1175\"\u003e✅ 12mm stud size – direct-fit upgrade for factory head bolts\u003cbr data-end=\"1241\" data-start=\"1238\"\u003e✅ Helps prevent \u003cstrong data-end=\"1288\" data-start=\"1257\"\u003ehead lift and blown gaskets\u003c\/strong\u003e under boost\u003cbr data-end=\"1303\" data-start=\"1300\"\u003e✅ Designed for \u003cstrong data-end=\"1361\" data-start=\"1318\"\u003ehigh-performance street and race builds\u003c\/strong\u003e\u003cbr data-end=\"1364\" data-start=\"1361\"\u003e✅ Reusable design – unlike torque-to-yield OEM bolts\u003cbr data-end=\"1419\" data-start=\"1416\"\u003e✅ Used in Atomic builds making 400–800+hp with SOHC engines\u003c\/p\u003e\n\u003chr class=\"\" data-end=\"1483\" data-start=\"1480\"\u003e\n\u003ch3 class=\"\" data-end=\"1534\" data-start=\"1485\"\u003e🛠️ \u003cstrong data-end=\"1532\" data-start=\"1493\"\u003eWhy Choose Atomic Tool Steel Studs?\u003c\/strong\u003e\n\u003c\/h3\u003e\n\u003cp class=\"\" data-end=\"1807\" data-start=\"1535\"\u003e✔️ Superior clamping force and torque retention\u003cbr data-end=\"1585\" data-start=\"1582\"\u003e✔️ Excellent fatigue resistance for repeated high-load cycles\u003cbr data-end=\"1649\" data-start=\"1646\"\u003e✔️ Maintains sealing integrity at high RPM and boost\u003cbr data-end=\"1704\" data-start=\"1701\"\u003e✔️ Perfect for turbocharged or high-compression setups\u003cbr data-end=\"1761\" data-start=\"1758\"\u003e✔️ Drop-in upgrade – no modifications required\u003c\/p\u003e\n\u003chr class=\"\" data-end=\"1812\" data-start=\"1809\"\u003e\n\u003ch3 class=\"\" data-end=\"1843\" data-start=\"1814\"\u003e📦 \u003cstrong data-end=\"1841\" data-start=\"1821\"\u003eWhat’s Included:\u003c\/strong\u003e\n\u003c\/h3\u003e\n\u003cul data-end=\"1993\" data-start=\"1844\"\u003e\n\u003cli class=\"\" data-end=\"1882\" data-start=\"1844\"\u003e\n\u003cp class=\"\" data-end=\"1882\" data-start=\"1846\"\u003e12x H13 tool steel 12mm head studs\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli class=\"\" data-end=\"1917\" data-start=\"1883\"\u003e\n\u003cp class=\"\" data-end=\"1917\" data-start=\"1885\"\u003e12x high-tensile 12-point nuts\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli class=\"\" data-end=\"1961\" data-start=\"1918\"\u003e\n\u003cp class=\"\" data-end=\"1961\" data-start=\"1920\"\u003e12x hardened \u0026amp; precision-ground washers\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli class=\"\" data-end=\"1993\" data-start=\"1962\"\u003e\n\u003cp class=\"\" data-end=\"1993\" data-start=\"1964\"\u003eMoly-based assembly lubricant\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Atomic Performance Products","offers":[{"title":"Default Title","offer_id":42816323289159,"sku":"306652-TS","price":570.0,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0585\/8751\/2903\/files\/Atomic_SOHC_INTECH_H13_Tool_Steel_12mm_Headstud_Kit.png?v=1779748492"},{"product_id":"306654-ts","title":"Atomic SOHC INTECH H13 T\/Steel 14.3mm Headstud Kit","description":"\u003cp data-start=\"235\" data-end=\"360\" class=\"\"\u003e\u003cstrong data-start=\"248\" data-end=\"360\"\u003eAtomic Head Stud Kit – Ford SOHC Intech 6-Cyl | 14.3mm H13 Tool Steel | Oversize | Maximum Clamping Strength\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp data-start=\"362\" data-end=\"711\" class=\"\"\u003e\u003cstrong data-start=\"362\" data-end=\"378\"\u003eDescription:\u003c\/strong\u003e\u003cbr data-start=\"378\" data-end=\"381\"\u003eWhen you're chasing serious power with your Ford \u003cstrong data-start=\"430\" data-end=\"463\"\u003eSOHC Intech 6-cylinder engine\u003c\/strong\u003e, standard fasteners simply aren't enough. The \u003cstrong data-start=\"510\" data-end=\"541\"\u003eAtomic 14.3mm Head Stud Kit\u003c\/strong\u003e, made from \u003cstrong data-start=\"553\" data-end=\"590\"\u003eH13 ultra high tensile tool steel\u003c\/strong\u003e, is built to handle extreme boost, combustion pressure, and repeated abuse — without compromising your head gasket seal.\u003c\/p\u003e\n\u003cp data-start=\"713\" data-end=\"986\" class=\"\"\u003eThis \u003cstrong data-start=\"718\" data-end=\"747\"\u003eoversized 14.3mm stud kit\u003c\/strong\u003e offers significantly greater surface area and clamping strength than factory bolts or standard 12mm stud kits, making it ideal for high-horsepower turbo builds, nitrous engines, or competition cars pushing the limits of the SOHC platform.\u003c\/p\u003e\n\u003chr data-start=\"988\" data-end=\"991\" class=\"\"\u003e\n\u003ch3 data-start=\"993\" data-end=\"1018\" class=\"\"\u003e✅ \u003cstrong data-start=\"999\" data-end=\"1016\"\u003eKey Features:\u003c\/strong\u003e\n\u003c\/h3\u003e\n\u003cp data-start=\"1019\" data-end=\"1540\" class=\"\"\u003e✅ Suits Ford SOHC Intech 4.0L 6-cylinder engines (with machining for 14.3mm fitment)\u003cbr data-start=\"1103\" data-end=\"1106\"\u003e✅ Oversize \u003cstrong data-start=\"1117\" data-end=\"1141\"\u003e14.3mm stud diameter\u003c\/strong\u003e – superior load distribution and grip\u003cbr data-start=\"1179\" data-end=\"1182\"\u003e✅ \u003cstrong data-start=\"1184\" data-end=\"1202\"\u003eH13 tool steel\u003c\/strong\u003e – ultra high tensile, heat-treated for fatigue and thermal resistance\u003cbr data-start=\"1272\" data-end=\"1275\"\u003e✅ Delivers maximum head clamping to combat lift and gasket failure\u003cbr data-start=\"1341\" data-end=\"1344\"\u003e✅ Designed for \u003cstrong data-start=\"1359\" data-end=\"1412\"\u003ehigh-boost, high-compression, and competition use\u003c\/strong\u003e\u003cbr data-start=\"1412\" data-end=\"1415\"\u003e✅ Reusable and torque-stable – outperforming torque-to-yield bolts\u003cbr data-start=\"1481\" data-end=\"1484\"\u003e✅ Trusted in Atomic’s top-end SOHC builds pushing 800+hp\u003c\/p\u003e\n\u003chr data-start=\"1542\" data-end=\"1545\" class=\"\"\u003e\n\u003ch3 data-start=\"1547\" data-end=\"1589\" class=\"\"\u003e🛠️ \u003cstrong data-start=\"1555\" data-end=\"1587\"\u003eWhy Upgrade to 14.3mm Studs?\u003c\/strong\u003e\n\u003c\/h3\u003e\n\u003cp data-start=\"1590\" data-end=\"1897\" class=\"\"\u003e✔️ Greater clamping force and surface engagement than 12mm kits\u003cbr data-start=\"1653\" data-end=\"1656\"\u003e✔️ Prevents head lift and combustion seal failure under extreme load\u003cbr data-start=\"1724\" data-end=\"1727\"\u003e✔️ Ideal for big turbo SOHC builds or competition engines\u003cbr data-start=\"1784\" data-end=\"1787\"\u003e✔️ Superior material and sizing equals long-term reliability\u003cbr data-start=\"1847\" data-end=\"1850\"\u003e✔️ Built for serious power with zero compromise\u003c\/p\u003e\n\u003chr data-start=\"1899\" data-end=\"1902\" class=\"\"\u003e\n\u003ch3 data-start=\"1904\" data-end=\"1933\" class=\"\"\u003e📦 \u003cstrong data-start=\"1911\" data-end=\"1931\"\u003eWhat’s Included:\u003c\/strong\u003e\n\u003c\/h3\u003e\n\u003cul data-start=\"1934\" data-end=\"2095\"\u003e\n\u003cli data-start=\"1934\" data-end=\"1974\" class=\"\"\u003e\n\u003cp data-start=\"1936\" data-end=\"1974\" class=\"\"\u003e12x 14.3mm H13 tool steel head studs\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"1975\" data-end=\"2009\" class=\"\"\u003e\n\u003cp data-start=\"1977\" data-end=\"2009\" class=\"\"\u003e12x high-tensile 12-point nuts\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"2010\" data-end=\"2063\" class=\"\"\u003e\n\u003cp data-start=\"2012\" data-end=\"2063\" class=\"\"\u003e12x hardened \u0026amp; precision-CNC washers\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"2064\" data-end=\"2095\" class=\"\"\u003e\n\u003cp data-start=\"2066\" data-end=\"2095\" class=\"\"\u003eMoly-based assembly lubricant\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Atomic Performance Products","offers":[{"title":"Default Title","offer_id":42816323321927,"sku":"306654","price":660.0,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0585\/8751\/2903\/files\/ATOMIC_SOHC_14.3mm_H13_T_Steel_Head_Studs.jpg?v=1779748492"},{"product_id":"306683-arp","title":"Atomic Barra Flexplate 12.9 grade bolt kit","description":"\u003cp\u003eARP hex head flexplate bolts suit standard or aftermarket Ford flexplates - AU Ford on. M10 x 1.25 x 20mm UHL. Set of 6 includ\u003c\/p\u003e","brand":"Atomic Performance Products","offers":[{"title":"Default Title","offer_id":42816327680071,"sku":"306683-STD","price":129.0,"currency_code":"AUD","in_stock":true}]},{"product_id":"306682-arp","title":"Atomic Barra Flexplate ARP bolt kit","description":"\u003cp\u003eARP flywheel bolts suit manual flywheel or Atomic #306720 chrome moly flexplate fitted to Ford DOHC 6 cyl. Set of 6 - M10\/1.2\u003c\/p\u003e","brand":"Atomic Performance Products","offers":[{"title":"Default Title","offer_id":42816327712839,"sku":"306682-ARP","price":129.0,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0585\/8751\/2903\/files\/Flexplate_Bolt_Kits_-_Capscrew_or_ARP_Bolts_with_Nordlock_Washers_6_7450ed81-5851-4be3-b803-e260175af7cd.jpg?v=1779748545"},{"product_id":"306681-hp-billet","title":"Atomic Barra Billet Harmonic Balancer Bolt Kit","description":"\u003cp data-start=\"192\" data-end=\"299\"\u003e\u003cstrong data-start=\"205\" data-end=\"299\"\u003eAtomic Harmonic Balancer Bolt Kit – Ford Barra 4.0L DOHC | High-Tensile + Nord-Lock Washer\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp data-start=\"301\" data-end=\"592\"\u003e\u003cstrong data-start=\"301\" data-end=\"317\"\u003eDescription:\u003c\/strong\u003e\u003cbr data-start=\"317\" data-end=\"320\"\u003eSecure your harmonic balancer with confidence. The \u003cstrong data-start=\"371\" data-end=\"408\"\u003eAtomic Harmonic Balancer Bolt Kit\u003c\/strong\u003e is engineered specifically for the \u003cstrong data-start=\"444\" data-end=\"475\"\u003eFord Barra 4.0L DOHC engine\u003c\/strong\u003e, providing a high-strength, vibration-resistant solution to one of the most critical fasteners in your engine build.\u003c\/p\u003e\n\u003cp data-start=\"594\" data-end=\"862\"\u003eWhether you're running factory power or pushing 1500hp, this \u003cstrong data-start=\"655\" data-end=\"676\"\u003ehigh-tensile bolt\u003c\/strong\u003e paired with a genuine \u003cstrong data-start=\"699\" data-end=\"719\"\u003eNord-Lock washer\u003c\/strong\u003e ensures your balancer stays locked to the crank, eliminating the risk of fretting, loosening, or catastrophic failure under high RPM and load.\u003c\/p\u003e\n\u003chr data-start=\"864\" data-end=\"867\"\u003e\n\u003ch3 data-start=\"869\" data-end=\"887\"\u003e✅ Key Features\u003c\/h3\u003e\n\u003cp data-start=\"889\" data-end=\"933\"\u003e\u003cstrong data-start=\"889\" data-end=\"931\"\u003e✅ Engineered for Strength and Security\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul data-start=\"934\" data-end=\"1070\"\u003e\n\u003cli data-start=\"934\" data-end=\"1070\"\u003e\n\u003cp data-start=\"936\" data-end=\"1070\"\u003eCustom high-tensile balancer bolt\u003cbr data-start=\"969\" data-end=\"972\"\u003e• Precision-machined for Barra DOHC crankshafts\u003cbr data-start=\"1021\" data-end=\"1024\"\u003e• Heat treated for extreme load conditions\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-start=\"1072\" data-end=\"1105\"\u003e\u003cstrong data-start=\"1072\" data-end=\"1103\"\u003e✅ Nord-Lock Washer Included\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul data-start=\"1106\" data-end=\"1251\"\u003e\n\u003cli data-start=\"1106\" data-end=\"1251\"\u003e\n\u003cp data-start=\"1108\" data-end=\"1251\"\u003eGenuine Nord-Lock washer\u003cbr data-start=\"1132\" data-end=\"1135\"\u003e• Utilizes wedge-locking tension to prevent loosening\u003cbr data-start=\"1190\" data-end=\"1193\"\u003e• Maintains torque under thermal cycling and vibration\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-start=\"1253\" data-end=\"1288\"\u003e\u003cstrong data-start=\"1253\" data-end=\"1286\"\u003e✅ Track-Tested, Street-Proven\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul data-start=\"1289\" data-end=\"1460\"\u003e\n\u003cli data-start=\"1289\" data-end=\"1322\"\u003e\n\u003cp data-start=\"1291\" data-end=\"1322\"\u003eProven in builds up to 2000hp\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"1323\" data-end=\"1391\"\u003e\n\u003cp data-start=\"1325\" data-end=\"1391\"\u003eIdeal for high-revving, forced induction, and track applications\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"1392\" data-end=\"1460\"\u003e\n\u003cp data-start=\"1394\" data-end=\"1460\"\u003eDirect fit for \u003cstrong data-start=\"1409\" data-end=\"1460\"\u003eBA, BF, FG and FGX Ford Barra 4.0L DOHC engines\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr data-start=\"1462\" data-end=\"1465\"\u003e\n\u003ch3 data-start=\"1467\" data-end=\"1491\"\u003e📦 What’s Included\u003c\/h3\u003e\n\u003cul data-start=\"1492\" data-end=\"1566\"\u003e\n\u003cli data-start=\"1492\" data-end=\"1534\"\u003e\n\u003cp data-start=\"1494\" data-end=\"1534\"\u003e1x High-tensile harmonic balancer bolt\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"1535\" data-end=\"1566\"\u003e\n\u003cp data-start=\"1537\" data-end=\"1566\"\u003e1x Genuine Nord-Lock washer\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Atomic Performance Products","offers":[{"title":"Default Title","offer_id":42816327745607,"sku":"306681-HP","price":129.0,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0585\/8751\/2903\/files\/Atomic_Harmonic_Balancer_Bolt_Kit_Ford_Barra_4.0L_DOHC_High-Tensile_Nord-Lock_Washer.jpg?v=1779748547"},{"product_id":"306676-14","title":"Atomic Barra M14 Head Stud OS Washer Kit","description":"\u003cp data-start=\"230\" data-end=\"355\" class=\"\"\u003e\u003cstrong data-start=\"243\" data-end=\"355\"\u003eAtomic Head Stud Oversize Washer Kit – Ford Barra DOHC | 14.3mm Stud | 28mm OD | Hardened \u0026amp; Precision CNC\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp data-start=\"357\" data-end=\"733\" class=\"\"\u003e\u003cstrong data-start=\"357\" data-end=\"373\"\u003eDescription:\u003c\/strong\u003e\u003cbr data-start=\"373\" data-end=\"376\"\u003eWhen pushing serious boost and cylinder pressure in high-power Barra builds, clamping force isn’t the only thing that matters — \u003cstrong data-start=\"504\" data-end=\"525\"\u003eload distribution\u003c\/strong\u003e is critical. The \u003cstrong data-start=\"543\" data-end=\"573\"\u003eAtomic Oversize Washer Kit\u003c\/strong\u003e is specifically designed for use with \u003cstrong data-start=\"612\" data-end=\"633\"\u003e14.3mm head studs\u003c\/strong\u003e, delivering maximum surface area to protect your cylinder head from crushing under extreme tension.\u003c\/p\u003e\n\u003cp data-start=\"735\" data-end=\"1036\" class=\"\"\u003eEach washer is \u003cstrong data-start=\"750\" data-end=\"783\"\u003eprecision-CNC and hardened\u003c\/strong\u003e, with an \u003cstrong data-start=\"793\" data-end=\"828\"\u003eoversized 28mm outside diameter\u003c\/strong\u003e to fully cover the head boss and maintain even clamp pressure. Ideal for 1000+hp engines using large-diameter studs, this kit ensures your head gasket seal holds — without damaging the alloy casting beneath.\u003c\/p\u003e\n\u003chr data-start=\"1038\" data-end=\"1041\" class=\"\"\u003e\n\u003ch3 data-start=\"1043\" data-end=\"1068\" class=\"\"\u003e✅ \u003cstrong data-start=\"1049\" data-end=\"1066\"\u003eKey Features:\u003c\/strong\u003e\n\u003c\/h3\u003e\n\u003cp data-start=\"1069\" data-end=\"1498\" class=\"\"\u003e✅ Suits \u003cstrong data-start=\"1077\" data-end=\"1102\"\u003e14.3mm head stud kits\u003c\/strong\u003e – ideal for high-power Barra builds\u003cbr data-start=\"1138\" data-end=\"1141\"\u003e✅ \u003cstrong data-start=\"1143\" data-end=\"1168\"\u003e28mm outside diameter\u003c\/strong\u003e – maximises clamping surface area\u003cbr data-start=\"1202\" data-end=\"1205\"\u003e✅ \u003cstrong data-start=\"1207\" data-end=\"1238\"\u003eHardened \u0026amp; precision-CNC\u003c\/strong\u003e – ensures even load distribution\u003cbr data-start=\"1271\" data-end=\"1274\"\u003e✅ Prevents \u003cstrong data-start=\"1285\" data-end=\"1329\"\u003ehead crush, fretting, and gasket failure\u003c\/strong\u003e\u003cbr data-start=\"1329\" data-end=\"1332\"\u003e✅ Designed to match Atomic 14.3mm stud kits\u003cbr data-start=\"1375\" data-end=\"1378\"\u003e✅ Used in all top-tier Atomic builds making \u003cstrong data-start=\"1422\" data-end=\"1438\"\u003e1000–1800+hp\u003c\/strong\u003e\u003cbr data-start=\"1438\" data-end=\"1441\"\u003e✅ Suitable for street, strip, dyno, and race applications\u003c\/p\u003e\n\u003chr data-start=\"1500\" data-end=\"1503\" class=\"\"\u003e\n\u003ch3 data-start=\"1505\" data-end=\"1544\" class=\"\"\u003e🛠️ \u003cstrong data-start=\"1513\" data-end=\"1542\"\u003eWhy Use Oversize Washers?\u003c\/strong\u003e\n\u003c\/h3\u003e\n\u003cp data-start=\"1545\" data-end=\"1872\" class=\"\"\u003e✔️ Factory head castings can deform under concentrated stud load\u003cbr data-start=\"1609\" data-end=\"1612\"\u003e✔️ These washers spread tension over a larger area to protect the head\u003cbr data-start=\"1682\" data-end=\"1685\"\u003e✔️ Prevents misdiagnosis of stud stretch due to head crush\u003cbr data-start=\"1743\" data-end=\"1746\"\u003e✔️ Ideal for high-boost, nitrous, and long-duration power pulls\u003cbr data-start=\"1809\" data-end=\"1812\"\u003e✔️ Insurance against blown gaskets and expensive head damage\u003c\/p\u003e\n\u003chr data-start=\"1874\" data-end=\"1877\" class=\"\"\u003e\n\u003ch3 data-start=\"1879\" data-end=\"1908\" class=\"\"\u003e📦 \u003cstrong data-start=\"1886\" data-end=\"1906\"\u003eWhat’s Included:\u003c\/strong\u003e\n\u003c\/h3\u003e\n\u003cul data-start=\"1909\" data-end=\"2034\"\u003e\n\u003cli data-start=\"1909\" data-end=\"1967\" class=\"\"\u003e\n\u003cp data-start=\"1911\" data-end=\"1967\" class=\"\"\u003eSet of \u003cstrong data-start=\"1918\" data-end=\"1965\"\u003eoversize 28mm OD hardened head stud washers\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"1968\" data-end=\"2034\" class=\"\"\u003e\n\u003cp data-start=\"1970\" data-end=\"2034\" class=\"\"\u003eSuits 14.3mm stud diameter (Atomic or custom big-bore stud kits)\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Atomic Performance Products","offers":[{"title":"Default Title","offer_id":42816327778375,"sku":"306676-14","price":139.0,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0585\/8751\/2903\/files\/Atomic_Head_Stud_Washer_Kit_M14_Oversize_OD_28mm_Ford_Barra_DOHC.jpg?v=1779748549"},{"product_id":"306675-14","title":"Atomic Barra M12 Head Stud OS Washer Kit","description":"\u003cp data-start=\"283\" data-end=\"592\"\u003eWhen you’re chasing big boost and big horsepower, you can’t afford to overlook the hardware that holds it all together. The \u003cstrong data-start=\"426\" data-end=\"470\"\u003eAtomic M12 Oversize Head Stud Washer Kit\u003c\/strong\u003e is engineered to address a common failure point in high-performance Barra builds — \u003cstrong data-start=\"554\" data-end=\"591\"\u003ehead crush around the washer seat\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cp data-start=\"594\" data-end=\"801\"\u003eThese washers are precision-machined from \u003cstrong data-start=\"636\" data-end=\"654\"\u003ehardened steel\u003c\/strong\u003e and feature an \u003cstrong data-start=\"670\" data-end=\"702\"\u003eoversize 28mm outer diameter\u003c\/strong\u003e to better distribute clamping force and prevent deformation of the cylinder head under high loads.\u003c\/p\u003e\n\u003chr data-start=\"803\" data-end=\"806\"\u003e\n\u003ch3 data-start=\"808\" data-end=\"826\"\u003e✅ Key Features\u003c\/h3\u003e\n\u003cp data-start=\"828\" data-end=\"1004\"\u003e\u003cstrong data-start=\"828\" data-end=\"875\"\u003e✅ Oversize OD for Maximum Load Distribution\u003c\/strong\u003e\u003cbr data-start=\"875\" data-end=\"878\"\u003e• 28mm OD spreads the clamping force across a wider area\u003cbr data-start=\"934\" data-end=\"937\"\u003e• Reduces risk of cylinder head crush and uneven torque retention\u003c\/p\u003e\n\u003cp data-start=\"1006\" data-end=\"1164\"\u003e\u003cstrong data-start=\"1006\" data-end=\"1042\"\u003e✅ Hardened for High Torque Loads\u003c\/strong\u003e\u003cbr data-start=\"1042\" data-end=\"1045\"\u003e• Manufactured from heat-treated hardened steel\u003cbr data-start=\"1092\" data-end=\"1095\"\u003e• Won’t deform under extreme cylinder pressure or repeated torquing\u003c\/p\u003e\n\u003cp data-start=\"1166\" data-end=\"1387\"\u003e\u003cstrong data-start=\"1166\" data-end=\"1207\"\u003e✅ Engineered for Boosted Barra Builds\u003c\/strong\u003e\u003cbr data-start=\"1207\" data-end=\"1210\"\u003e• Perfect for Ford 4.0L DOHC 6-cyl engines\u003cbr data-start=\"1252\" data-end=\"1255\"\u003e• Designed to complement M12 head stud kits — including Atomic, ARP, and others\u003cbr data-start=\"1334\" data-end=\"1337\"\u003e• Race-proven in engines making 1000+ horsepower\u003c\/p\u003e\n\u003chr data-start=\"1389\" data-end=\"1392\"\u003e\n\u003ch3 data-start=\"1394\" data-end=\"1422\"\u003e🔧 Why You Need This Kit\u003c\/h3\u003e\n\u003cp data-start=\"1424\" data-end=\"1770\"\u003eIn high-boost applications, especially when using upgraded head studs and aftermarket head gaskets, the \u003cstrong data-start=\"1528\" data-end=\"1576\"\u003efactory washer footprint is simply too small\u003c\/strong\u003e. This leads to the washer \u003cstrong data-start=\"1603\" data-end=\"1644\"\u003ecrushing into the soft aluminium head\u003c\/strong\u003e, causing you to \u003cstrong data-start=\"1661\" data-end=\"1695\"\u003elose torque and clamping force\u003c\/strong\u003e — which in turn leads to \u003cstrong data-start=\"1721\" data-end=\"1769\"\u003eblown head gaskets or suspected stud stretch\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cp data-start=\"1772\" data-end=\"1952\"\u003eThis washer kit is designed to \u003cstrong data-start=\"1803\" data-end=\"1825\"\u003esolve that problem\u003c\/strong\u003e by spreading the load over a larger surface area. It’s a simple, affordable insurance policy against expensive engine failure.\u003c\/p\u003e\n\u003chr data-start=\"1954\" data-end=\"1957\"\u003e\n\u003ch3 data-start=\"1959\" data-end=\"1983\"\u003e📦 What’s Included\u003c\/h3\u003e\n\u003cul data-start=\"1984\" data-end=\"2044\"\u003e\n\u003cli data-start=\"1984\" data-end=\"2044\"\u003e\n\u003cp data-start=\"1986\" data-end=\"2044\"\u003eSet of 14x M12 Oversize OD (28mm) hardened steel washers\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Atomic Performance Products","offers":[{"title":"Default Title","offer_id":42816327811143,"sku":"306675","price":129.0,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0585\/8751\/2903\/files\/Atomic_Head_Stud_Washer_Kit_M12_Oversize_OD_28mm_Ford_Barra_DOHC.jpg?v=1779748550"},{"product_id":"306671","title":"Atomic Barra Tool Steel Main Stud Kit","description":"\u003cp class=\"\" data-end=\"404\" data-start=\"267\"\u003e\u003cstrong data-end=\"404\" data-start=\"280\"\u003eAtomic Tool Steel Main Stud Kit – Ford Barra DOHC | H13 Tool Steel | Complete Bottom-End Fastening Solution\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp class=\"\" data-end=\"684\" data-start=\"406\"\u003e\u003cstrong data-end=\"422\" data-start=\"406\"\u003eDescription:\u003c\/strong\u003e\u003cbr data-end=\"425\" data-start=\"422\"\u003eWhen you're building a high-horsepower Barra, the bottom end needs to be locked down — permanently. The factory main bolts are not designed to handle the \u003cstrong data-end=\"638\" data-start=\"579\"\u003eextreme cylinder pressure, torsional load, and high RPM\u003c\/strong\u003e seen in serious street and race applications.\u003c\/p\u003e\n\u003cp class=\"\" data-end=\"1045\" data-start=\"686\"\u003eEnter the \u003cstrong data-end=\"731\" data-start=\"696\"\u003eAtomic Tool Steel Main Stud Kit\u003c\/strong\u003e — a premium fastener upgrade for \u003cstrong data-end=\"818\" data-start=\"765\"\u003eFG-onward Ford Barra 4.0L DOHC 6-cylinder engines\u003c\/strong\u003e. Manufactured from \u003cstrong data-end=\"856\" data-start=\"838\"\u003eH13 tool steel\u003c\/strong\u003e, known for its \u003cstrong data-end=\"940\" data-start=\"872\"\u003eexceptional toughness, fatigue resistance, and thermal stability\u003c\/strong\u003e, these studs offer superior performance over conventional alloys, even under the most brutal conditions.\u003c\/p\u003e\n\u003cp class=\"\" data-end=\"1156\" data-start=\"1047\"\u003eWhether you're chasing 600hp or pushing past 1500+, this is the bulletproof foundation your bottom end needs.\u003c\/p\u003e\n\u003chr class=\"\" data-end=\"1161\" data-start=\"1158\"\u003e\n\u003ch3 class=\"\" data-end=\"1188\" data-start=\"1163\"\u003e✅ \u003cstrong data-end=\"1186\" data-start=\"1169\"\u003eKey Features:\u003c\/strong\u003e\n\u003c\/h3\u003e\n\u003cp class=\"\" data-end=\"1642\" data-start=\"1189\"\u003e✅ Suits \u003cstrong data-end=\"1240\" data-start=\"1197\"\u003eFG-onward Ford Barra DOHC 6-cyl engines\u003c\/strong\u003e\u003cbr data-end=\"1243\" data-start=\"1240\"\u003e✅ Manufactured from \u003cstrong data-end=\"1281\" data-start=\"1263\"\u003eH13 tool steel\u003c\/strong\u003e – ultra high tensile and heat-resistant\u003cbr data-end=\"1324\" data-start=\"1321\"\u003e✅ Includes \u003cstrong data-end=\"1374\" data-start=\"1335\"\u003ehardened washers, high-tensile nuts\u003c\/strong\u003e, and \u003cstrong data-end=\"1402\" data-start=\"1380\"\u003emoly assembly lube\u003c\/strong\u003e\u003cbr data-end=\"1405\" data-start=\"1402\"\u003e✅ Replaces factory main bolts with high-strength precision studs\u003cbr data-end=\"1472\" data-start=\"1469\"\u003e✅ Maintains consistent cap clamping under extreme load\u003cbr data-end=\"1529\" data-start=\"1526\"\u003e✅ Prevents cap walk, bearing misalignment, and oil pressure loss\u003cbr data-end=\"1596\" data-start=\"1593\"\u003e✅ Proven in Atomic engines making 1000–1800+hp\u003c\/p\u003e\n\u003chr class=\"\" data-end=\"1647\" data-start=\"1644\"\u003e\n\u003ch3 class=\"\" data-end=\"1682\" data-start=\"1649\"\u003e🛠️ \u003cstrong data-end=\"1680\" data-start=\"1657\"\u003eWhy H13 Tool Steel?\u003c\/strong\u003e\n\u003c\/h3\u003e\n\u003cp class=\"\" data-end=\"2008\" data-start=\"1683\"\u003e✔️ Outstanding \u003cstrong data-end=\"1720\" data-start=\"1698\"\u003efatigue resistance\u003c\/strong\u003e – handles repeated high-load cycles\u003cbr data-end=\"1759\" data-start=\"1756\"\u003e✔️ Superior \u003cstrong data-end=\"1792\" data-start=\"1771\"\u003ethermal stability\u003c\/strong\u003e – resists expansion\/stretch under heat\u003cbr data-end=\"1834\" data-start=\"1831\"\u003e✔️ Exceptional \u003cstrong data-end=\"1881\" data-start=\"1849\"\u003eyield strength and toughness\u003c\/strong\u003e – critical for turbocharged, high-RPM builds\u003cbr data-end=\"1929\" data-start=\"1926\"\u003e✔️ Commonly used in aerospace, motorsport, and high-stress tooling applications\u003c\/p\u003e\n\u003chr class=\"\" data-end=\"2013\" data-start=\"2010\"\u003e\n\u003ch3 class=\"\" data-end=\"2059\" data-start=\"2015\"\u003e💪 \u003cstrong data-end=\"2057\" data-start=\"2022\"\u003eWhy Upgrade to a Main Stud Kit?\u003c\/strong\u003e\n\u003c\/h3\u003e\n\u003cp class=\"\" data-end=\"2287\" data-start=\"2060\"\u003e✔️ Provides more even, reliable clamping than factory bolts\u003cbr data-end=\"2122\" data-start=\"2119\"\u003e✔️ Keeps the crank locked in place under extreme torsional loads\u003cbr data-end=\"2189\" data-start=\"2186\"\u003e✔️ Reduces risk of main bearing damage and crank walk\u003cbr data-end=\"2245\" data-start=\"2242\"\u003e✔️ Drop-in upgrade – no machining required\u003c\/p\u003e\n\u003chr class=\"\" data-end=\"2292\" data-start=\"2289\"\u003e\n\u003cp class=\"\" data-end=\"2477\" data-start=\"2294\"\u003eLock it down with the best. The \u003cstrong data-end=\"2361\" data-start=\"2326\"\u003eAtomic Tool Steel Main Stud Kit\u003c\/strong\u003e is the uncompromising choice for barra builders who want strength, precision, and durability at the core of their engine.\u003c\/p\u003e","brand":"Atomic Performance Products","offers":[{"title":"FG onwards","offer_id":42816327843911,"sku":"306671","price":570.0,"currency_code":"AUD","in_stock":true},{"title":"BA\/BF","offer_id":42816327876679,"sku":"306670","price":570.0,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0585\/8751\/2903\/files\/Atomic_Tool_Steel_Main_Stud_Kit_Ford_Barra_DOHC_1.jpg?v=1779748552"},{"product_id":"306653-tsos","title":"Atomic Barra M14 Tool Steel Head Stud Kit","description":"\u003cp\u003e14.3mm \u003cbr\u003eH13 Tool Steel\u003c\/p\u003e\n\u003cp\u003eCorrect length - bottoming tip which can be trimmed down if the stud sits too high (apparently some castings have shallow holes by ~10mm)\u003cbr\u003e\u003cbr\u003eH-13 Tool Steel 14.3mm Head stud kit suit BA-on Ford DOHC 6 cyl. Includes 12pt double hex nuts, 28mm oversize CRMO washe\u003c\/p\u003e","brand":"Atomic Performance Products","offers":[{"title":"Default Title","offer_id":42816327909447,"sku":"306653-TSOS","price":670.0,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0585\/8751\/2903\/files\/Atomic_Barra_14.3mm_Tool_Steel_Head_Stud_Kit.jpg?v=1779748554"},{"product_id":"306651-tsos","title":"Atomic Barra Tool Steel Headstuds","description":"\u003cp\u003e\u003cmeta charset=\"UTF-8\"\u003e \u003cmeta name=\"viewport\" content=\"width=device-width, initial-scale=1.0\"\u003e\u003c\/p\u003e\n\u003cstyle\u003e\n        \/* ATOMIC PERFORMANCE THEME STYLES - LIGHT MODE *\/\n        .atomic-container {\n            font-family: 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;\n            max-width: 1000px;\n            margin: 0 auto;\n            background-color: #ffffff;\n            color: #333333;\n            line-height: 1.6;\n            border: 1px solid #e0e0e0;\n            box-sizing: border-box;\n        }\n\n        \/* BRAND COLORS *\/\n        :root {\n            --atomic-orange: #E4522B;\n            --atomic-purple: #663399;\n            --light-grey: #f4f4f4;\n            --border-color: #ddd;\n        }\n\n        \/* TYPOGRAPHY *\/\n        .atomic-header {\n            text-align: center;\n            padding: 40px 20px;\n            border-bottom: 4px solid var(--atomic-orange);\n            background-color: #fafafa;\n            width: 100%;\n        }\n\n        .atomic-title {\n            color: var(--atomic-orange);\n            font-size: 2.5rem;\n            text-transform: uppercase;\n            margin: 0;\n            font-weight: 900;\n            letter-spacing: 1px;\n            line-height: 1.1;\n        }\n\n        .atomic-subtitle {\n            color: #555;\n            font-size: 1.2rem;\n            margin-top: 10px;\n            font-weight: 400;\n            text-transform: uppercase;\n            letter-spacing: 2px;\n        }\n\n        h2 {\n            color: #222;\n            text-transform: uppercase;\n            font-size: 1.8rem;\n            margin-bottom: 15px;\n            border-left: 5px solid var(--atomic-orange);\n            padding-left: 15px;\n        }\n\n        h3 {\n            color: #333;\n            font-size: 1.4rem;\n            margin-top: 0;\n            font-weight: 700;\n        }\n\n        p {\n            margin-bottom: 15px;\n            color: #444;\n        }\n\n        strong {\n            color: #000;\n        }\n\n        \/* LAYOUT GRIDS *\/\n        .atomic-section {\n            padding: 40px;\n            border-bottom: 1px solid #eee;\n        }\n\n        .atomic-grid {\n            display: grid;\n            grid-template-columns: 1fr 1fr;\n            gap: 40px;\n            align-items: center;\n        }\n\n        \/* IMAGES *\/\n        .atomic-img {\n            width: 100%;\n            height: auto;\n            border-radius: 4px;\n            border: 1px solid #ddd;\n            box-shadow: 0 4px 10px rgba(0, 0, 0, 0.1);\n            background-color: #eee; \/* Placeholder background *\/\n            min-height: 250px;\n            object-fit: cover;\n        }\n\n        .img-caption {\n            font-size: 0.85rem;\n            color: #666;\n            text-align: center;\n            margin-top: 8px;\n            font-style: italic;\n        }\n\n        \/* LISTS *\/\n        ul.atomic-list {\n            list-style: none;\n            padding: 0;\n        }\n\n        ul.atomic-list li {\n            padding-left: 25px;\n            position: relative;\n            margin-bottom: 10px;\n            color: #444;\n        }\n\n        ul.atomic-list li::before {\n            content: \"►\";\n            color: var(--atomic-orange);\n            position: absolute;\n            left: 0;\n        }\n\n        \/* TABLE STYLES *\/\n        .atomic-table {\n            width: 100%;\n            border-collapse: collapse;\n            margin-top: 20px;\n            font-size: 0.9rem;\n        }\n        \n        .atomic-table th {\n            background-color: var(--atomic-purple);\n            color: white;\n            padding: 12px;\n            text-align: left;\n        }\n        \n        .atomic-table td {\n            padding: 12px;\n            border-bottom: 1px solid #eee;\n        }\n        \n        .atomic-table tr:nth-child(even) {\n            background-color: #f9f9f9;\n        }\n\n        \/* CTA BUTTON *\/\n        .atomic-cta {\n            display: inline-block;\n            background-color: var(--atomic-orange);\n            color: #fff;\n            padding: 15px 30px;\n            font-size: 1.2rem;\n            font-weight: bold;\n            text-transform: uppercase;\n            text-decoration: none;\n            border-radius: 4px;\n            margin-top: 20px;\n            text-align: center;\n            box-sizing: border-box;\n            transition: background 0.3s;\n            cursor: pointer;\n            border: none;\n        }\n\n        .atomic-cta:hover {\n            background-color: #c03d1b;\n        }\n\n        \/* RESPONSIVE *\/\n        @media (max-width: 768px) {\n            .atomic-grid {\n                grid-template-columns: 1fr;\n            }\n\n            .atomic-title {\n                font-size: 1.8rem;\n            }\n\n            .atomic-section {\n                padding: 20px;\n            }\n            \n            .atomic-table {\n                font-size: 0.8rem;\n            }\n        }\n    \u003c\/style\u003e\n\u003cdiv class=\"atomic-container\"\u003e\n\u003c!-- HEADER (Full Width) --\u003e\n\u003cdiv class=\"atomic-header\"\u003e\n\u003ch1 class=\"atomic-title\"\u003eAtomic Tool Steel Head Studs\u003c\/h1\u003e\n\u003cdiv class=\"atomic-subtitle\"\u003eH13 Tool Steel | CA625 Strength at 1\/3 the Price\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c!-- WHY YOU SHOULD UPGRADE SECTION --\u003e\n\u003cdiv class=\"atomic-section\"\u003e\n\u003cdiv class=\"atomic-grid\"\u003e\n\u003cdiv\u003e\n\u003ch2\u003eWhy Pay 3x More for the Same Strength?\u003c\/h2\u003e\n\u003cp\u003eIn the world of high-horsepower fasteners, you typically have two choices: standard chromoly studs (good for ~800hp) or exotic super-alloy studs like Custom Age 625+ (good for 2000hp+, but with an eye-watering price tag). For most serious Barra builds, the standard stud is too weak, but the 625+ is overkill on the wallet.\u003c\/p\u003e\n\u003c!-- DID YOU KNOW SECTION --\u003e\n\u003cdiv style=\"background-color: #f8f4fc; border-left: 5px solid var(--atomic-purple); padding: 20px; margin: 25px 0; border-radius: 4px;\"\u003e\n\u003cstrong style=\"color: var(--atomic-purple); font-size: 1.1rem; display: block; margin-bottom: 8px;\"\u003e💡 DID YOU KNOW?\u003c\/strong\u003e\n\u003cp style=\"margin: 0; font-size: 0.95rem;\"\u003e\u003cstrong\u003eH13 Tool Steel matches CA625 strength.\u003c\/strong\u003e Our H13 studs are rated to ~270,000 psi tensile strength—effectively identical to the ~260-280k psi rating of ARP CA625+ studs. The difference? You can buy an Atomic kit for nearly \u003cstrong\u003eone-third of the price\u003c\/strong\u003e.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003ch2 style=\"color: var(--atomic-purple); border-left-color: var(--atomic-purple);\"\u003eThe Atomic Solution\u003c\/h2\u003e\n\u003cp\u003eWe filled the gap in the market by manufacturing our studs from \u003cstrong\u003eH13 Tool Steel\u003c\/strong\u003e. To guarantee maximum fatigue resistance, our threads are \u003cstrong\u003ecold-rolled\u003c\/strong\u003e rather than cut, and the entire stud undergoes a specialized \u003cstrong\u003eheat-treatment\u003c\/strong\u003e process to lock in superior structural integrity. This material offers exceptional thermal stability and tensile strength, making it perfect for high-boost applications where head lift is a constant threat. Plus, we added features usually reserved for the most expensive kits, like external hex drives for easy installation.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0587\/5548\/1713\/files\/Atomic_SOHC_INTECH_Tool_Steel_Headstud_Kit.png?v=1746748863\" alt=\"H13 Tool Steel headstuds\"\u003e\u003cbr\u003e\n\u003cdiv class=\"img-caption\"\u003eHeat-treated H13 Tool Steel: The Goldilocks of Fasteners.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c!-- FEATURE: HEX DRIVE \u0026 WASHERS --\u003e\n\u003cdiv style=\"background-color: #fafafa;\" class=\"atomic-section\"\u003e\n\u003cdiv class=\"atomic-grid\"\u003e\n\u003cdiv\u003e\n\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0587\/5548\/1713\/files\/atomic_barra_H13_tool_steel_head_studs.jpg?v=1756800407\" alt=\"Atomic Barra Tool Steel Headstuds with OS Washers\"\u003e\u003cbr\u003e\n\u003cdiv class=\"img-caption\"\u003eExternal 8mm Hex for easy install\/removal.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003ch2\u003e2. Mechanic-Friendly Features\u003c\/h2\u003e\n\u003cp\u003eWe build engines, so we know the frustration of installing studs with only an Allen key slot. We fixed that.\u003c\/p\u003e\n\u003cul class=\"atomic-list\"\u003e\n\u003cli\u003e\n\u003cstrong\u003e8mm External Hex Tip:\u003c\/strong\u003e Every stud features a machined hex tip, allowing you to easily wind them into the block by hand or with a socket. No more double-nutting or struggling with Allen keys.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOversized Washers:\u003c\/strong\u003e Included in our premium kits, these spread the immense clamping load over a wider area of the alloy head, preventing the washer from crushing into the soft aluminium under high torque.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDirect Replacement:\u003c\/strong\u003e Designed to be a drop-in upgrade for the factory M12 head bolts.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c!-- COMPARISON TABLE --\u003e\n\u003cdiv class=\"atomic-section\"\u003e\n\u003ch2\u003eHead Stud Comparison\u003c\/h2\u003e\n\u003ctable class=\"atomic-table\"\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003eGrade \/ Material\u003c\/th\u003e\n\u003cth\u003eTensile Strength (PSI)\u003c\/th\u003e\n\u003cth\u003ePrice Bracket\u003c\/th\u003e\n\u003cth\u003eKey Characteristics\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eAtomic H13 Tool Steel\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003e~270,000+\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003e$$ (Best Value)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\n\u003cstrong\u003eStronger than L19 and ARP2000.\u003c\/strong\u003e Excellent thermal stability.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eARP 2000\u003c\/td\u003e\n\u003ctd\u003e~220,000\u003c\/td\u003e\n\u003ctd\u003e$$\u003c\/td\u003e\n\u003ctd\u003eIndustry standard. Good all-rounder but can stretch under extreme boost.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCustom Age 625+\u003c\/td\u003e\n\u003ctd\u003e~260,000 – 280,000\u003c\/td\u003e\n\u003ctd\u003e$$$$$ (Extreme)\u003c\/td\u003e\n\u003ctd\u003eSuper-alloy. Extremely strong but typically costs 3-4x more.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003c!-- TECH SPECS --\u003e\n\u003cdiv style=\"text-align: center;\" class=\"atomic-section\"\u003e\n\u003ch3 style=\"color: var(--atomic-orange);\"\u003eTech Specs\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eMaterial:\u003c\/strong\u003e H13 Tool Steel\u003cbr\u003e\u003cstrong\u003eTensile Strength:\u003c\/strong\u003e ~270,000 psi\u003cbr\u003e\u003cstrong\u003eThread Size:\u003c\/strong\u003e M12 (Standard)\u003cbr\u003e\u003cstrong\u003eFeatures:\u003c\/strong\u003e 8mm External Hex Tip\u003cbr\u003e\u003cstrong\u003eApplication:\u003c\/strong\u003e Ford Barra DOHC 4.0L\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c!-- IMPORTANT NOTES \u0026 WARNINGS --\u003e\n\u003cdiv style=\"background-color: #fffdf0; border-left: 6px solid #d4a017;\" class=\"atomic-section\"\u003e\n\u003ch3 style=\"color: #b08d55; margin-top: 0; text-transform: uppercase;\"\u003e⚠️ Installation Notes\u003c\/h3\u003e\n\u003cul class=\"atomic-list\"\u003e\n\u003cli\u003e\n\u003cstrong\u003eLubrication:\u003c\/strong\u003e You MUST use the supplied moly-based assembly lubricant on the threads and washers to ensure accurate torque readings.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWashers:\u003c\/strong\u003e Ensure the chamfered side of the washer faces UP towards the nut.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTorque Sequence:\u003c\/strong\u003e Follow the included torque sequence carefully. Do not over-torque, as these studs provide significantly higher clamping force than OEM bolts at the same torque value.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003c!-- CTA FOOTER --\u003e\n\u003cdiv style=\"text-align: center; border-bottom: none;\" class=\"atomic-section\"\u003e\n\u003cdiv style=\"margin-top: 10px;\"\u003e\u003ca class=\"atomic-cta\" href=\"#\"\u003eAdd to Cart\u003c\/a\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e","brand":"Atomic Performance Products","offers":[{"title":"12mm Studs- Std Size Washers","offer_id":42816327942215,"sku":"306651-TS","price":560.01,"currency_code":"AUD","in_stock":true},{"title":"12mm Studs- OS Washers (most popular)","offer_id":42816327974983,"sku":"306651-K-12mm","price":590.0,"currency_code":"AUD","in_stock":true},{"title":"14mm Studs- OS Washers","offer_id":42816328007751,"sku":"306653-OS","price":670.0,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0585\/8751\/2903\/files\/Atomic_Barra_Tool_Steel_Headstuds_with_OS_Washers.jpg?v=1779748555"}],"url":"https:\/\/www.ffpgarage.com.au\/collections\/atomic-studs-bolts.oembed","provider":"FFP","version":"1.0","type":"link"}