{"product_id":"vr38-stage-4-cylinder-head-package-nissan-gt-r-r35-gsc-s6-s4m-cams-beryllium-seats","title":"VR38 STAGE 4 CYLINDER HEAD PACKAGE | NISSAN GT-R R35 | GSC S6\/S4M CAMS + BERYLLIUM SEATS","description":"\u003cp\u003eThe Subzero Motorsports VR38 Stage 4 Cylinder Head Package represents the highest level of cylinder head development for the Nissan GT-R R35 platform.\u003c\/p\u003e\n\u003cp\u003eBuilt for extreme horsepower and high RPM applications, this package is centered around the GSC Power-Division S6\/S4M billet camshaft set—designed to deliver maximum lift, aggressive duration, and optimal airflow for large turbo and race-driven setups.\u003c\/p\u003e\n\u003cp\u003eAirflow is further enhanced with +1mm oversized Super Alloy intake and exhaust valves, increasing volumetric efficiency while maintaining structural integrity under extreme heat and cylinder pressures. The upgraded 6.6mm exhaust valve stem configuration improves durability and reduces stress-related failures in high-load environments.\u003c\/p\u003e\n\u003cp\u003eTo handle the demands of aggressive cam profiles and high boost, the valvetrain is equipped with GSC’s extreme pressure conical spring kit paired with titanium retainers, ensuring precise valve control and stability at very high RPM.\u003c\/p\u003e\n\u003cp\u003eWhat sets this package apart is the inclusion of SZM Beryllium valve seats, offering superior heat transfer, improved sealing, and unmatched durability in extreme conditions—making it the preferred choice for high-end race and record-breaking builds.\u003c\/p\u003e\n\u003cp\u003eThis is a no-compromise cylinder head solution, built for those pushing the absolute limits of the VR38DETT platform.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong data-end=\"156\" data-start=\"132\"\u003eIncluded Components:\u003c\/strong\u003e\u003cspan role=\"text\"\u003e\u003cstrong data-start=\"2427\" data-end=\"2450\"\u003e\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cul data-start=\"2451\" data-end=\"2744\"\u003e\n\u003cli data-section-id=\"nby0bh\" data-start=\"2451\" data-end=\"2519\"\u003eGSC Power-Division Intake Valve Guides with Stopper (GSC3046-12)\u003c\/li\u003e\n\u003cli data-section-id=\"5haqfp\" data-start=\"2520\" data-end=\"2601\"\u003eGSC Power-Division 6.6mm Exhaust Valve Guides with Depth Step (SC3143.001-12)\u003c\/li\u003e\n\u003cli data-section-id=\"11l5z5f\" data-start=\"2602\" data-end=\"2657\"\u003eGSC Power-Division Viton Valve Stem Seals (GSC1050)\u003c\/li\u003e\n\u003cli data-section-id=\"1nxioqh\" data-start=\"2658\" data-end=\"2744\"\u003eGSC Power-Division Extreme Pressure Conical Spring Kit with Ti Retainers (GSC5089)\u003c\/li\u003e\n\u003cli\u003eGSC Power-Division +1mm Flat Face Intake Valves (GSC2058-12)\u003c\/li\u003e\n\u003cli data-section-id=\"1nxioqh\" data-start=\"2658\" data-end=\"2744\"\u003eGSC Power-Division +1mm Super Alloy Exhaust Valves (GSC2053-12)\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli data-section-id=\"1nxioqh\" data-start=\"2658\" data-end=\"2744\"\u003eGSC Power-Division Billet S6 or S4M Camshaft Set (GSC7045S6)\u003c\/li\u003e\n\u003cli data-section-id=\"1nxioqh\" data-start=\"2658\" data-end=\"2744\"\u003eSZM Beryllium Valve Seats (Set of 24)\u003c\/li\u003e\n\u003cli data-section-id=\"1nxioqh\" data-start=\"2658\" data-end=\"2744\"\u003eSZM GT-R R35 Jack Bolts\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong data-start=\"132\" data-end=\"156\"\u003eIncluded Services:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eCNC Porting\u003c\/li\u003e\n\u003cli\u003eCC Chamber\u003c\/li\u003e\n\u003cli\u003eHigh jack bolt installation\u003c\/li\u003e\n\u003cli\u003e\u003cspan data-sheets-root=\"1\"\u003eWater Jacket Reinforcement\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003eDecking\/CNC Facing\u003c\/li\u003e\n\u003cli\u003eValve Lapping\u003c\/li\u003e\n\u003cli\u003eShim Setting\u003c\/li\u003e\n\u003cli\u003eSpring height adjustment\u003c\/li\u003e\n\u003cli\u003eValve Guide installation\u003c\/li\u003e\n\u003cli\u003eValve Guide honing\u003c\/li\u003e\n\u003cli\u003eInitial Inspection \u0026amp; Prep\/cleaning (chemical \/ ultrasonic)\/Crack testing \/Deck\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan data-sheets-root=\"1\"\u003evalve seat installation + Heat Cycle\/ Vacuum Testing\u003c\/span\u003e\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eSeat Cutting (multi-angle assumed)\u003c\/li\u003e\n\u003cli\u003eAssembly\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Nissan GTR R35 Performance Parts \u0026 Builds | Subzero Motorsports UAE","offers":[{"title":"Default Title","offer_id":48204493816043,"sku":null,"price":21929.96,"currency_code":"AED","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0735\/0108\/1835\/files\/HeadPackagesPix_614eef55-c438-4d1c-8b44-be83045efc58.png?v=1776954035","url":"https:\/\/www.subzeromotorsport.com\/ar\/products\/vr38-stage-4-cylinder-head-package-nissan-gt-r-r35-gsc-s6-s4m-cams-beryllium-seats","provider":"Nissan GTR R35 Performance Parts \u0026 Builds | Subzero Motorsports UAE","version":"1.0","type":"link"}