{"product_id":"supertech-nissan-rb26-31-15x6-94x102-7mm-1-5mm-tip-incnl-exh-valve-set-of-12-req-ret-nrb60-ts-2","title":"Supertech Nissan RB26 31.15x6.94x102.7mm +1.5mm Tip Incnl Exh Valve - Set of 12 (Req RET-NRB60-TS-2)","description":"\u003cdiv\u003e\n\u003cstrong\u003eSKU:\u003c\/strong\u003e \u003cspan itemprop=\"sku\"\u003eNEVI-1032-7-L-12\u003c\/span\u003e   |   \u003cstrong\u003eUPC:\u003c\/strong\u003e 1037721244654\u003c\/div\u003e\n\u003cdiv\u003e\u003cbr\u003e\u003c\/div\u003e\n\u003ch4\u003e\u003cstrong\u003eSupertech Nissan RB26 31.15mm +1.5mm Tip Inconel Exhaust Valve – Set of 12 (Req RET-NRB60-TS-2)\u003c\/strong\u003e\u003c\/h4\u003e\n\u003cp\u003eThe \u003cstrong\u003eSupertech NEVI-1032-7-L-12\u003c\/strong\u003e Inconel Exhaust Valves are a top-tier racing upgrade for Nissan RB26DETT engines (R32\/R33\/R34 Skyline GT-R). Oversized +1.5mm tip (31.15mm head diameter), 6.94mm stem, and 102.7mm overall length, these valves are made from high-temperature Inconel alloy for extreme heat resistance and durability in high-boost, high-RPM turbo applications. The sodium-filled stem reduces weight and improves heat transfer, while the swirl-polished tulip head enhances exhaust flow and combustion efficiency. Sold as a set of 12 (full exhaust side), these valves require Supertech RET-NRB60-TS-2 retainers for proper single-groove lock compatibility. Ideal for street, drift, drag, or time-attack RB26 builds pushing 800+ horsepower with upgraded cams, springs, and boost levels.\u003c\/p\u003e\n\u003ch4\u003eKey Features \u0026amp; Benefits\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003eInconel Alloy Construction – Exceptional heat resistance for high-boost and extreme RPM turbo applications\u003c\/li\u003e\n\u003cli\u003e+1.5mm Oversized Head (31.15mm) – Increases exhaust flow for higher horsepower and better top-end power\u003c\/li\u003e\n\u003cli\u003eSodium-Filled Stem – Reduces valve weight and improves heat dissipation for cooler operation\u003c\/li\u003e\n\u003cli\u003eSwirl-Polished Tulip Head – Optimized flow characteristics and reduced turbulence for improved combustion\u003c\/li\u003e\n\u003cli\u003eSupertech Motorsport Quality – Precision-machined in Europe for reliability in professional racing\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eSpecifications\u003c\/h4\u003e\n\u003ctable border=\"1\" cellpadding=\"8\" cellspacing=\"0\" width=\"100%\"\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003eSpecification\u003c\/th\u003e\n\u003cth\u003eDetail\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003ePart Number\u003c\/td\u003e\n\u003ctd\u003eNEVI-1032-7-L-12\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBrand\u003c\/td\u003e\n\u003ctd\u003eSupertech\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eApplication\u003c\/td\u003e\n\u003ctd\u003eNissan RB26DETT (R32\/R33\/R34 GT-R)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eValve Type\u003c\/td\u003e\n\u003ctd\u003eInconel Exhaust\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHead Diameter\u003c\/td\u003e\n\u003ctd\u003e31.15mm (+1.5mm over stock)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eStem Diameter\u003c\/td\u003e\n\u003ctd\u003e6.94mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOverall Length\u003c\/td\u003e\n\u003ctd\u003e102.7mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMaterial\u003c\/td\u003e\n\u003ctd\u003eInconel high-temperature alloy (sodium-filled stem)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHead Design\u003c\/td\u003e\n\u003ctd\u003eSwirl-polished tulip\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eQuantity\u003c\/td\u003e\n\u003ctd\u003eSet of 12 (full exhaust side)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRequired Retainer\u003c\/td\u003e\n\u003ctd\u003eRET-NRB60-TS-2 (single groove)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch4\u003eWhats Included\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003eSet of 12 Inconel exhaust valves – 31.15mm head, 6.94mm stem, 102.7mm length\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eProduct Notes\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003eDesigned for high-boost RB26 turbo builds – excellent heat resistance and flow\u003c\/li\u003e\n\u003cli\u003eRequires Supertech RET-NRB60-TS-2 retainers for single-groove compatibility\u003c\/li\u003e\n\u003cli\u003eSodium-filled stem lowers operating temperature and reduces weight\u003c\/li\u003e\n\u003cli\u003eCompatible with high-lift cams, upgraded springs, and titanium retainers\u003c\/li\u003e\n\u003cli\u003eSupertech – European precision for professional motorsports and high-horsepower applications\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003eEstimated time: 8-16 hours (full cylinder head work required)\u003c\/li\u003e\n\u003cli\u003eRequires head removal, valve job, seat cutting, and professional assembly\u003c\/li\u003e\n\u003cli\u003eInstall with matching single-groove retainers, keepers, and upgraded springs\u003c\/li\u003e\n\u003cli\u003eCheck valve-to-piston clearance, especially with +1.5mm oversized valves\u003c\/li\u003e\n\u003cli\u003eProfessional engine builder installation strongly recommended\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eThis Part Fits\u003c\/h4\u003e\n\u003ctable border=\"1\" cellpadding=\"8\" cellspacing=\"0\"\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003eYear Range\u003c\/th\u003e\n\u003cth\u003eMake\u003c\/th\u003e\n\u003cth\u003eModel\u003c\/th\u003e\n\u003cth\u003eEngine\u003c\/th\u003e\n\u003cth\u003eNotes\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 GT-R (R32)\u003c\/td\u003e\n\u003ctd\u003eRB26DETT 2.6L Twin-Turbo\u003c\/td\u003e\n\u003ctd\u003eExhaust valves – high-boost\/race upgrade\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 GT-R (R33)\u003c\/td\u003e\n\u003ctd\u003eRB26DETT 2.6L Twin-Turbo\u003c\/td\u003e\n\u003ctd\u003eExhaust valves – high-boost\/race upgrade\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 GT-R (R34)\u003c\/td\u003e\n\u003ctd\u003eRB26DETT 2.6L Twin-Turbo\u003c\/td\u003e\n\u003ctd\u003eExhaust valves – high-boost\/race upgrade\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eVarious\u003c\/td\u003e\n\u003ctd\u003eNissan\u003c\/td\u003e\n\u003ctd\u003eRB26DETT-Powered Vehicles\u003c\/td\u003e\n\u003ctd\u003eRB26DETT 2.6L\u003c\/td\u003e\n\u003ctd\u003eCustom turbo\/racing builds\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch4\u003eWhy Choose Supertech Inconel Exhaust Valves for RB26?\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003eInconel alloy withstands extreme heat and boost in high-horsepower RB26 builds\u003c\/li\u003e\n\u003cli\u003e+1.5mm oversize and swirl-polished head for maximum exhaust flow and power\u003c\/li\u003e\n\u003cli\u003eSodium-filled stem reduces heat and weight for better high-RPM stability\u003c\/li\u003e\n\u003cli\u003eSupertech European precision trusted in professional drifting, drag, and time attack\u003c\/li\u003e\n\u003c\/ul\u003e\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 R34 GT-R RB26DETT? \u003cbr\u003e\u003cstrong\u003eA:\u003c\/strong\u003e Yes, direct fit for RB26DETT exhaust valves; +1.5mm oversize for increased flow.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eQ:\u003c\/strong\u003e Are these suitable for 1000+ hp builds? \u003cbr\u003e\u003cstrong\u003eA:\u003c\/strong\u003e Yes, Inconel construction and sodium-filled stem are ideal for high-boost, high-heat applications.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eQ:\u003c\/strong\u003e Do I need matching retainers? \u003cbr\u003e\u003cstrong\u003eA:\u003c\/strong\u003e Yes, requires Supertech RET-NRB60-TS-2 single-groove retainers.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eShipping and Handling\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eMethod:\u003c\/strong\u003e UPS \/ FedEx 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 Secure protective packaging\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight:\u003c\/strong\u003e Approx. 2-3 lbs (set of 12 valves)\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Supertech","offers":[{"title":"Default Title","offer_id":44560810082383,"sku":"SPTNEVI-1032-7-L-12","price":507.63,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1062\/7920\/files\/supertech_rb26_valves_nevi1032712.jpg?v=1772807421","url":"https:\/\/www.blackopsautoworks.com\/products\/supertech-nissan-rb26-31-15x6-94x102-7mm-1-5mm-tip-incnl-exh-valve-set-of-12-req-ret-nrb60-ts-2","provider":"Black Ops Auto Works","version":"1.0","type":"link"}