{"product_id":"supertech-valve-spring-kit-for-nissan-rb25det-neo","title":"Supertech Valve Spring Kit for Nissan RB25DET NEO","description":"\u003cp\u003e\u003cspan\u003eUpgrade your Nissan RB25 DOHC NEO (Solid lifter) valvetrain with Supertech valve spring kit. Each kit is matched as a complete valvetrain package — springs, retainers, locators, and locks — so installation is straightforward, and clearance issues are eliminated. Built to control valve motion at high RPM, reduce valve float, and support aggressive cam profiles. Compatible with most aftermarket and OEM camshafts within the rated lift range. Installation requires verifying the installed spring height with the included shims and confirming retainer-to-seal clearance. Recommended for any build running aggressive cams, increased RPM ceilings, or forced induction. Order direct from Supertech for fast shipping and expert technical support.\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\u003eKey specs: Spring type: Beehive Valve Spring\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eSeat pressure: 78lbs @ 38.70mm\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eOpen pressure: 200lbs @ 10.00mm\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eSpring rate: 12.80lbs\/mm\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eMax lift: 15.30mm\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eCoil Bind: 22.80mm\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan\u003eSafe RPM: 8000\u003c\/span\u003e\u003cspan\u003e\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003e24 Springs, 24 Spring Shims, 24 Seat Locator, 24 Titanium Retainer\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":59472235987230,"sku":"321030010","price":795.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0834\/7169\/6158\/files\/321030010-01.jpg?v=1781665532","url":"https:\/\/retro95.com\/products\/supertech-valve-spring-kit-for-nissan-rb25det-neo","provider":"Retro95","version":"1.0","type":"link"}