{"product_id":"supertech-nissan-rb25-dohc-neo-30-65-1x5-96x-97-65mm-inconel-exhaust-valve-set-of-12","title":"Supertech Nissan RB25 DOHC NEO 30.65 (+1)x5.96x 97.65mm Inconel Exhaust Valve - Set of 12","description":"\u003cdiv\u003e\n\u003cstrong\u003eSKU:\u003c\/strong\u003e \u003cspan itemprop=\"sku\"\u003eNEVI-1052-NEO-12\u003c\/span\u003e   |   \u003cstrong\u003eUPC:\u003c\/strong\u003e 1037721245428\u003c\/div\u003e\n\u003cdiv\u003e\u003c\/div\u003e\n\u003ch4\u003e\u003cstrong\u003eSupertech Nissan RB25 DOHC NEO Inconel Exhaust Valves - Set of 12 (30.65mm +1mm Head)\u003c\/strong\u003e\u003c\/h4\u003e\n\u003cp\u003eThe \u003cstrong\u003eSupertech NEVI-1052-NEO-12\u003c\/strong\u003e Inconel Exhaust Valves are the premium choice for high-performance Nissan RB25 DOHC NEO engine builds. These +1mm oversized (30.65mm head) Inconel valves offer superior heat resistance and strength, making them ideal for high-boost turbo applications, aggressive camshafts, and high-horsepower RB25DET setups. Sold as a complete set of 12, they provide exceptional durability under extreme temperatures and stresses while improving flow over stock valves.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003eInconel Material: Extreme heat resistance and strength for turbocharged and high-RPM applications\u003c\/li\u003e\n\u003cli\u003e+1mm Oversized Head (30.65mm): Increased flow for better performance\u003c\/li\u003e\n\u003cli\u003ePrecision Machined: 5.96mm stem and 97.65mm overall length for perfect fitment\u003c\/li\u003e\n\u003cli\u003eFull Set of 12: Complete exhaust valve set for RB25 inline-6 engines\u003c\/li\u003e\n\u003cli\u003eSupertech Quality: Trusted by professional engine builders for maximum reliability\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eSpecifications\u003c\/h4\u003e\n\u003ctable width=\"100%\" cellspacing=\"0\" cellpadding=\"8\" border=\"1\"\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-1052-NEO-12\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eValve Type\u003c\/td\u003e\n\u003ctd\u003eExhaust\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHead Diameter\u003c\/td\u003e\n\u003ctd\u003e30.65mm (+1mm Oversize)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eStem Diameter\u003c\/td\u003e\n\u003ctd\u003e5.96mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOverall Length\u003c\/td\u003e\n\u003ctd\u003e97.65mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMaterial\u003c\/td\u003e\n\u003ctd\u003eInconel\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eQuantity\u003c\/td\u003e\n\u003ctd\u003eSet of 12\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eApplication\u003c\/td\u003e\n\u003ctd\u003eNissan RB25 DOHC NEO Engines\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInstallation\u003c\/td\u003e\n\u003ctd\u003eProfessional Cylinder Head Work Required\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCountry of Origin\u003c\/td\u003e\n\u003ctd\u003eUnited States\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWarranty\u003c\/td\u003e\n\u003ctd\u003eLimited (Supertech)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eShipping Weight\u003c\/td\u003e\n\u003ctd\u003eApprox. 2-3 lbs\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch4\u003eWhat's Included\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003eSet of 12 Supertech Inconel Exhaust Valves\u003c\/li\u003e\n\u003cli\u003eTechnical Specifications\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eProduct Notes\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003eDesigned for high-boost turbo RB25 builds and aggressive performance applications\u003c\/li\u003e\n\u003cli\u003e+1mm oversized head improves airflow and performance\u003c\/li\u003e\n\u003cli\u003eRequires professional valve job and proper installation clearances\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003eRequires precision cylinder head machining and valve job\u003c\/li\u003e\n\u003cli\u003eProfessional machine shop installation strongly recommended\u003c\/li\u003e\n\u003cli\u003eCheck valve-to-piston clearance and spring pressures\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eThis Part Fits\u003c\/h4\u003e\n\u003ctable cellspacing=\"0\" cellpadding=\"8\" border=\"1\"\u003e\n\u003cthead\u003e\n\u003ctr\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\u003eNissan RB25 DOHC NEO\u003c\/td\u003e\n\u003ctd\u003eRB25DET NEO engines found in Skyline R33\/R34, Stagea, and other performance models\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch4\u003eWhy Choose Supertech Inconel Exhaust Valves?\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003eSuperior heat resistance for high-boost and high-temperature applications\u003c\/li\u003e\n\u003cli\u003ePrecision manufacturing for reliable high-RPM performance\u003c\/li\u003e\n\u003cli\u003eProven in professional RB25 engine builds worldwide\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 Are these intake or exhaust valves? \u003cbr\u003e\u003cstrong\u003eA:\u003c\/strong\u003e These are Inconel Exhaust Valves for the RB25 DOHC NEO engine.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eQ:\u003c\/strong\u003e What does +1 mean? \u003cbr\u003e\u003cstrong\u003eA:\u003c\/strong\u003e +1mm oversized head diameter for improved flow compared to stock.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eQ:\u003c\/strong\u003e Do I need a machine shop? \u003cbr\u003e\u003cstrong\u003eA:\u003c\/strong\u003e Yes – proper valve guide installation, seat cutting, and clearance checking is required.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eShipping \u0026amp; 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\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Supertech","offers":[{"title":"Default Title","offer_id":44521730179151,"sku":"SPTNEVI-1052-NEO-12","price":423.82,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1062\/7920\/files\/supertech-rb25-inconel-valves.jpg?v=1772123286","url":"https:\/\/www.blackopsautoworks.com\/products\/supertech-nissan-rb25-dohc-neo-30-65-1x5-96x-97-65mm-inconel-exhaust-valve-set-of-12","provider":"Black Ops Auto Works","version":"1.0","type":"link"}