{"product_id":"arp-head-stud-kit-bmw-s55","title":"ARP Head Stud Kit - BMW S55","description":"\u003cp\u003eStrengthen the bottom end of your BMW S55 engine with the ARP Head Stud Kit - BMW S55, delivering far greater clamping force and sealing than the factory fasteners. Engineered by ARP (Automotive Racing Products), this head stud kit is built to the standards demanded by high-performance and motorsport BMW builds.\u003c\/p\u003e\u003ch3\u003eKey Features\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eDesigned for BMW S55 engine\u003c\/li\u003e\n\u003cli\u003eSignificantly increased clamping force over OEM fasteners\u003c\/li\u003e\n\u003cli\u003eImproved head gasket sealing and cylinder head clamping\u003c\/li\u003e\n\u003cli\u003eIdeal for stroker, supercharged and turbocharged builds\u003c\/li\u003e\n\u003cli\u003eRe-usable — superior to single-use OEM torque-to-yield bolts\u003c\/li\u003e\n\u003cli\u003eManufactured from premium, specially heat-treated materials\u003c\/li\u003e\n\u003cli\u003eAvailable in multiple configuration options to suit your build\u003c\/li\u003e\n\u003cli\u003eSupplied by ARP (Automotive Racing Products), trusted by BMW enthusiasts worldwide\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eProduct Details\u003c\/h3\u003e\u003cp\u003eStrengthen the bottom end of your BMW S55 engine with the ARP Head Stud Kit - BMW S55, delivering far greater clamping force and sealing than the factory fasteners. Engineered by ARP (Automotive Racing Products), this head stud kit is built to the standards demanded by high-performance and motorsport BMW builds.\u003c\/p\u003e\u003ch4\u003eKey Features\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eDesigned for BMW S55 engine\u003c\/li\u003e\n\u003cli\u003eSignificantly increased clamping force over OEM fasteners\u003c\/li\u003e\n\u003cli\u003eImproved head gasket sealing and cylinder head clamping\u003c\/li\u003e\n\u003cli\u003eIdeal for stroker, supercharged and turbocharged builds\u003c\/li\u003e\n\u003cli\u003eRe-usable — superior to single-use OEM torque-to-yield bolts\u003c\/li\u003e\n\u003cli\u003eManufactured from premium, specially heat-treated materials\u003c\/li\u003e\n\u003cli\u003eAvailable in multiple configuration options to suit your build\u003c\/li\u003e\n\u003cli\u003eSupplied by ARP (Automotive Racing Products), trusted by BMW enthusiasts worldwide\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eProduct Details\u003c\/h4\u003e\u003cp\u003eThe ARP head stud kit for the BMW S55 replaces the factory cylinder head bolts with high-strength ARP studs\/bolts that clamp the cylinder head to the block. Designed for the S55, the twin-turbo straight-six of the F80 M3 and F82 M4, this is a critical upgrade where forced induction places extreme stress on the head gasket, main caps and connecting rods. Standard torque-to-yield fasteners stretch permanently and lose clamping load over time — ARP hardware restores and increases that clamping force, helping prevent head gasket failure, cap walk and fastener fatigue.\u003c\/p\u003e\u003cp\u003eAvailable options for this engine:\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eCustom Age 625+ — a 280,000 psi super-alloy with outstanding fatigue life, the recommended choice for stroker, supercharged and turbocharged builds\u003c\/li\u003e\n\u003cli\u003eARP2000 — a 220,000 psi alloy steel, the proven choice for performance builds and quality rebuilds\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eSupplied with ARP Ultra-Torque fastener assembly lubricant and torqued in stages to ARP’s specification. After initial assembly, complete a full heat cycle and re-torque the fasteners for a lasting, reliable seal.\u003c\/p\u003e\u003ch4\u003eConfiguration Options\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eARP2000\u003c\/li\u003e\n\u003cli\u003eCustom Age 625+\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eCompatibility\u003c\/h4\u003e\u003cp\u003e\u003cstrong\u003eBMW S55 Models\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eBMW F80 M3\u003c\/li\u003e\n\u003cli\u003eBMW F82 \/ F83 M4\u003c\/li\u003e\n\u003cli\u003eBMW F87 M2 Competition\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eWhy Choose ARP (Automotive Racing Products)?\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eGlobal leader in performance engine fasteners\u003c\/li\u003e\n\u003cli\u003ePremium materials with specialist heat treatment\u003c\/li\u003e\n\u003cli\u003eManufactured in-house in the USA\u003c\/li\u003e\n\u003cli\u003eTrusted from street rebuilds to professional motorsport\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eWhy Buy from R44 Performance?\u003c\/h4\u003e\u003cp\u003eR44 Performance supplies premium BMW performance and engine-building components trusted by enthusiasts worldwide.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eBMW specialists\u003c\/li\u003e\n\u003cli\u003eGenuine ARP (Automotive Racing Products) products\u003c\/li\u003e\n\u003cli\u003eFast UK \u0026amp; worldwide shipping\u003c\/li\u003e\n\u003cli\u003eExpert product support\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eUpgrade your BMW S55 build with the ARP Head Stud Kit - BMW S55 — available now from R44 Performance.\u003c\/p\u003e\u003ch3\u003eConfiguration Options\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eARP2000\u003c\/li\u003e\n\u003cli\u003eCustom Age 625+\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eCompatibility\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eBMW S55 Models\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eBMW F80 M3\u003c\/li\u003e\n\u003cli\u003eBMW F82 \/ F83 M4\u003c\/li\u003e\n\u003cli\u003eBMW F87 M2 Competition\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eWhy Choose ARP (Automotive Racing Products)?\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eGlobal leader in performance engine fasteners\u003c\/li\u003e\n\u003cli\u003ePremium materials with specialist heat treatment\u003c\/li\u003e\n\u003cli\u003eManufactured in-house in the USA\u003c\/li\u003e\n\u003cli\u003eTrusted from street rebuilds to professional motorsport\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eWhy Buy from R44 Performance?\u003c\/h3\u003e\u003cp\u003eR44 Performance supplies premium BMW performance and engine-building components trusted by enthusiasts worldwide.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eBMW specialists\u003c\/li\u003e\n\u003cli\u003eGenuine ARP (Automotive Racing Products) products\u003c\/li\u003e\n\u003cli\u003eFast UK \u0026amp; worldwide shipping\u003c\/li\u003e\n\u003cli\u003eExpert product support\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eUpgrade your BMW S55 build with the ARP Head Stud Kit - BMW S55 — available now from R44 Performance.\u003c\/p\u003e","brand":"ARP","offers":[{"title":"ARP2000","offer_id":57549790445950,"sku":"ARP-HSK-S55-S","price":412.0,"currency_code":"GBP","in_stock":true},{"title":"Custom Age 625+","offer_id":57549790478718,"sku":"ARP-HSK-S55-CA","price":748.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0280\/7568\/8011\/files\/ARP-Head-Stud-Kit_a396d78f-ea54-41d9-a2c7-13891d2dbc77.webp?v=1781532106","url":"https:\/\/r44performance.com\/products\/arp-head-stud-kit-bmw-s55","provider":"R44 Performance","version":"1.0","type":"link"}