{"product_id":"gsc-p-d-nissan-rb26dett-31-15mm-head-1mm-os-103-24mm-long-1-5mm-tip-exhaust-valve-set-of-12","title":"GSC P-D Nissan RB26DETT 31.15mm Head +1mm OS 103.24mm Long +1.5mm Tip Exhaust Valve - Set of 12","description":"\u003cp\u003e\u003cstrong\u003eSKU:\u003c\/strong\u003e \u003cspan itemprop=\"sku\"\u003e2149-12\u003c\/span\u003e\u003c\/p\u003e\n\n\u003ch4\u003e\u003cstrong\u003eGSC P-D Nissan RB26DETT 31.15mm Head +1mm OS 103.24mm Long +1.5mm Tip Exhaust Valve - Set of 12 1989-2002 Skyline GT-R\u003c\/strong\u003e\u003c\/h4\u003e\n\u003cp\u003eUpgrade your Nissan RB26DETT engine with GSC Power-Division exhaust valves designed specifically for Skyline GT-R models from 1989 to 2002. This set of 12 +1mm oversize valves features a 31.15mm head diameter and 103.24mm length with +1.5mm extended tip for enhanced sealing and exhaust flow in high-performance builds. Engineered for reliability under extreme boost and RPM these valves deliver consistent power gains in R32 R33 and R34 GT-R applications.\u003c\/p\u003e\n\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e31.15mm Head +1mm OS:\u003c\/strong\u003e Oversize head diameter increases exhaust flow area without compromising valve train geometry for better top-end power in turbocharged RB26DETT engines\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e103.24mm Length +1.5mm Tip:\u003c\/strong\u003e Extended tip improves valve seal and guides directly into stock or aftermarket seats reducing wear during high heat cycles\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOne-Piece Forged 21-4N Stainless:\u003c\/strong\u003e High-strength stainless steel construction resists fatigue and maintains shape at elevated temperatures for race-level durability\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e7mm Stem Diameter:\u003c\/strong\u003e Precise stem sizing ensures compatibility with RB26DETT guides and springs while minimizing friction for smoother operation\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSwirl Polished Finish:\u003c\/strong\u003e Polished surfaces reduce airflow turbulence promoting efficient scavenging and higher horsepower output\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch4\u003eProduct Notes\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003eValve seats and guides may require machining for +1mm oversize fitment\u003c\/li\u003e\n\u003cli\u003ePair with GSC valve springs for optimal performance and spring pressures\u003c\/li\u003e\n\u003cli\u003eShips in protective foam-lined box to prevent damage\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003eProfessional installation recommended.\u003c\/li\u003e\n\u003cli\u003eMachine valve seats to accommodate +1mm oversize head diameter\u003c\/li\u003e\n\u003cli\u003eCompatible with OEM or GSC valve springs and retainers no special hardware needed\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch4\u003eThis Part Fits\u003c\/h4\u003e\n\u003ctable border=\"1\"\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003eYear\u003c\/th\u003e\n\u003cth\u003eMake\u003c\/th\u003e\n\u003cth\u003eModel\u003c\/th\u003e\n\u003cth\u003eSubmodel\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e1989-1994\u003c\/td\u003e\n\u003ctd\u003eNissan\u003c\/td\u003e\n\u003ctd\u003eSkyline\u003c\/td\u003e\n\u003ctd\u003eR32 GT-R RB26DETT\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e1995-1998\u003c\/td\u003e\n\u003ctd\u003eNissan\u003c\/td\u003e\n\u003ctd\u003eSkyline\u003c\/td\u003e\n\u003ctd\u003eR33 GT-R RB26DETT\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e1999-2002\u003c\/td\u003e\n\u003ctd\u003eNissan\u003c\/td\u003e\n\u003ctd\u003eSkyline\u003c\/td\u003e\n\u003ctd\u003eR34 GT-R RB26DETT\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003ch4\u003eWhy Choose GSC Power-Division?\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003eTrusted by GT-R tuners for JDM engine builds with proven track records\u003c\/li\u003e\n\u003cli\u003eUSA-manufactured components using premium materials for long-term strength\u003c\/li\u003e\n\u003cli\u003ePrecision CNC machining ensures exact tolerances for drop-in performance\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch4\u003e\u003cstrong\u003eFrequently Asked Questions\u003c\/strong\u003e\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eQ:\u003c\/strong\u003e Will these fit my stock RB26DETT head?\u003cbr\u003e\n      \u003cstrong\u003eA:\u003c\/strong\u003e Yes with minor seat machining for the +1mm oversize head these install into factory or ported R32 R33 R34 GT-R cylinder heads\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eQ:\u003c\/strong\u003e What material are the valves made from?\u003cbr\u003e\n      \u003cstrong\u003eA:\u003c\/strong\u003e Forged one-piece 21-4N stainless steel provides excellent heat resistance and strength for boosted applications over 1000hp\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eQ:\u003c\/strong\u003e Do I need new springs for installation?\u003cbr\u003e\n      \u003cstrong\u003eA:\u003c\/strong\u003e Recommended to use GSC dual valve springs for proper coil bind and pressure but compatible with upgraded OEM-style springs\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch4\u003eShipping \u0026amp; Handling\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eMethod:\u003c\/strong\u003e UPS Ground\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAvailability:\u003c\/strong\u003e In stock - ships same or next business day\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePackaging:\u003c\/strong\u003e Foam-lined box 12 x 6 x 2 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight:\u003c\/strong\u003e 1.8 lbs\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"GSC Power Division","offers":[{"title":"Default Title","offer_id":41146866434127,"sku":"GSC2149-12","price":526.89,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1062\/7920\/products\/807b76f3274a1e33dc3690e280fc3013_ab49ea9f-f00f-4a11-99ce-6a554091313f.jpg?v=1706758443","url":"https:\/\/www.blackopsautoworks.com\/products\/gsc-p-d-nissan-rb26dett-31-15mm-head-1mm-os-103-24mm-long-1-5mm-tip-exhaust-valve-set-of-12","provider":"Black Ops Auto Works","version":"1.0","type":"link"}