{"product_id":"arp-207-4702-pro-series-undercut-head-stud-kit-7-bolt-mitsubishi-4g63-m11-copy","title":"ARP 207-4302 Custom Age 625+ Ultra-Duty Head Stud Kit – 7-Bolt Mitsubishi 4G63 (M11)","description":"\u003cp\u003eUpgrade your engine’s clamping power with the ultimate-tier \u003cstrong\u003eARP 207-4302\u003c\/strong\u003e Head Stud Kit for 7-bolt Mitsubishi 4G63 engines. Manufactured from ARP's proprietary Custom Age 625+ super-alloy, these fasteners are heat-treated to a massive 270,000 psi tensile strength. This kit provides the absolute maximum clamping force available on the market, serving as your ultimate insurance policy against catastrophic head lift on high-horsepower, extreme-boost applications.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eCustom Age 625+ Super-Alloy:\u003c\/strong\u003e Premium extreme-grade material rated at a staggering 270,000 psi tensile strength—outperforming standard 8740 and L19 alloys.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePrecision Threads:\u003c\/strong\u003e Threads are rolled \u003cem\u003eafter\u003c\/em\u003e heat treatment to ensure maximum fatigue strength and thread longevity under extreme loads.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEngineered for 650+ HP:\u003c\/strong\u003e Designed specifically for high-boost turbo setups, E85\/race fuel configurations, and maximum-effort competition builds.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eComplete Kit:\u003c\/strong\u003e Includes 10 Custom Age 625+ studs, 10 parallel-ground washers, 10 12-point nuts, and ARP Ultra-Torque assembly lubricant.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eFitment \u0026amp; Application\u003c\/h4\u003e\n\u003cp\u003eFeatures \u003cstrong\u003eM11 (11mm)\u003c\/strong\u003e thread sizing specifically for late-model 7-bolt 4G63 blocks.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eFits:\u003c\/strong\u003e 1995–1999 Mitsubishi Eclipse GST\/GSX \u0026amp; Eagle Talon TSi (2G DSM)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFits:\u003c\/strong\u003e Mitsubishi Lancer Evolution 4, 5, 6, 7, 8, and 9 (Evo IV–IX)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e❌ \u003cstrong\u003eWARNING — WILL NOT FIT:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eEarly 1989–1992 6-bolt blocks.\u003c\/li\u003e\n\u003cli\u003e1992.5–1994 early 7-bolt blocks (1G DSM), which utilize M12 threads.\u003c\/li\u003e\n\u003cli\u003eMitsubishi Lancer Evolution 1, 2, and 3 (Evo I–III), which utilize M12 threads.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cem\u003eAlways confirm your exact engine block thread diameter (M11 vs M12) before ordering.\u003c\/em\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eManufacturer Part Number:\u003c\/strong\u003e 207-4302\u003c\/p\u003e\n\u003ch4\u003eWhy choose Custom Age 625+ over standard studs?\u003c\/h4\u003e\n\u003cp\u003eAs cylinder pressures skyrocket from massive boost levels or aggressive fuel configurations, standard fasteners can stretch, leading to head lift and blown multi-layer steel (MLS) head gaskets. Custom Age 625+ delivers nearly a 35% increase in tensile strength over standard 8740 chrome moly. This unmatched material yield strength provides the rigid, extreme clamping pressure required to keep your cylinder head locked down tight to the block under peak combustion pressure.\u003c\/p\u003e","brand":"Golden Eagle Mfg.","offers":[{"title":"Default Title","offer_id":67780519198996,"sku":null,"price":429.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/2201\/0995\/files\/arp4g63625.jpg?v=1792772466","url":"https:\/\/goldeneaglemfg.com\/products\/arp-207-4702-pro-series-undercut-head-stud-kit-7-bolt-mitsubishi-4g63-m11-copy","provider":"Golden Eagle Mfg.","version":"1.0","type":"link"}