{"product_id":"supertech-stainless-intake-valves-for-nissan-rb25det-neo-1-00mm-oversize","title":"Supertech Stainless Intake Valves for Nissan RB25DET NEO (+1.00mm oversize)","description":"\u003cp\u003e\u003cspan\u003eSupertech intake valves for the Nissan RB25DET NEO with the factory solid lifters, engineered for racing and high-performance builds. Crafted from premium materials with computer-optimized profiles for improved airflow, heat dissipation, and valvetrain stability at high RPM. Black Nitride surface treatment reduces friction and improves heat dissipation compared to uncoated valves. Proper installation requires cylinder head CNC machining, verifying valve-to-piston clearance and installed spring height during assembly. For a complete valvetrain refresh, pair with matched Supertech exhaust valves, valve springs, retainers, valve guides, and stem seals.\u003c\/span\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cspan\u003eFits Nissan Skyline 1998-2002 RB25DET NEO\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eGroove Type: Single Groove\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eValve Face Type: Dished\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eLength: 104.15mm\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eStem Diameter: 5.97mm\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eMaterial: Stainless Steel 21-4N\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eHead Diameter: 35.15mm (+1.00mm oversize)\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003e12 Valves\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cspan\u003e⚠ WARNING: Cancer and Reproductive Harm - \u003cspan style=\"color: rgb(0, 0, 0);\"\u003e\u003ca href=\"https:\/\/www.p65warnings.ca.gov\/\" style=\"color: rgb(0, 0, 0);\"\u003ewww.P65Warnings.ca.gov\u003c\/a\u003e\u003c\/span\u003e\u003cbr\u003eDisclaimer: Product images are for reference only. Actual product may vary.\u003c\/span\u003e\u003c\/p\u003e","brand":"Retro95","offers":[{"title":"Default Title","offer_id":59477930639646,"sku":"321030011","price":305.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0834\/7169\/6158\/files\/Intake-valves.jpg?v=1781745559","url":"https:\/\/retro95.com\/products\/supertech-stainless-intake-valves-for-nissan-rb25det-neo-1-00mm-oversize","provider":"Retro95","version":"1.0","type":"link"}