{"product_id":"arp-head-stud-kit-bmw-m50-m52-s50-s52","title":"ARP Head Stud Kit - BMW M50 \/ M52 \/ S50 \/ S52","description":"\u003cp\u003eStrengthen the bottom end of your BMW M50 \/ M52 \/ S50 \/ S52 engines with the ARP Head Stud Kit - BMW M50 \/ M52 \/ S50 \/ S52, 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 M50 \/ M52 \/ S50 \/ S52 engines\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\u003eThe ARP head stud kit for the BMW M50 \/ M52 \/ S50 \/ S52 replaces the factory cylinder head bolts with high-strength ARP studs\/bolts that clamp the cylinder head to the block. Designed for BMW’s M50-family 24-valve straight-six, this is a critical upgrade a hugely popular base for turbo and supercharger conversions, where cylinder pressures climb well beyond standard. 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\u003cli\u003eMultiple stud\/bolt sizing options (ARP2000 - 10 mm, Custom Age 625+ - 10 mm, 11 mm) to match your build\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\u003ch3\u003eConfiguration Options\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eARP2000 - 10 mm\u003c\/li\u003e\n\u003cli\u003eCustom Age 625+ - 10 mm\u003c\/li\u003e\n\u003cli\u003e11 mm\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eCompatibility\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eBMW M50 Models\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eBMW E34 525i\u003c\/li\u003e\n\u003cli\u003eBMW E36 320i \/ 325i\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eBMW M52 Models\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eBMW E36 323i \/ 328i\u003c\/li\u003e\n\u003cli\u003eBMW E39 523i \/ 528i\u003c\/li\u003e\n\u003cli\u003eBMW Z3 2.8\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eBMW S50 Models\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\u003cli\u003eBMW E36 M3 (Euro)\u003c\/li\u003e\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eBMW S52 Models\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eBMW E36 M3 (US, 1996-1999)\u003c\/li\u003e\n\u003cli\u003eBMW Z3 M Roadster \/ Coupe (US)\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 M50 \/ M52 \/ S50 \/ S52 build with the ARP Head Stud Kit - BMW M50 \/ M52 \/ S50 \/ S52 — available now from R44 Performance.\u003c\/p\u003e","brand":"ARP","offers":[{"title":"ARP2000 - 10 mm","offer_id":57549789626750,"sku":"ARP-HSK-M50-S","price":177.0,"currency_code":"GBP","in_stock":true},{"title":"Custom Age 625+ - 10 mm","offer_id":57549789659518,"sku":"ARP-HSK-M50-CA","price":525.0,"currency_code":"GBP","in_stock":true},{"title":"11 mm","offer_id":57549789692286,"sku":"ARP-HSK-M50-11","price":374.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0280\/7568\/8011\/files\/ARP-Head-Stud-Kit_5217401f-e2e1-4f99-83ad-9c9b8d0bc793.webp?v=1781532100","url":"https:\/\/r44performance.com\/products\/arp-head-stud-kit-bmw-m50-m52-s50-s52","provider":"R44 Performance","version":"1.0","type":"link"}