{"product_id":"supertech-nissan-rb26det-24v-dual-valve-spring-kit-2","title":"Supertech Nissan RB26DETT 24-Valve Dual Valve Spring Kit | SPRK-M1007D-RB-2L","description":"\u003ch2\u003eSupertech Dual Valve Spring Kit for Nissan RB26 DOHC\u003c\/h2\u003e\n\u003cdiv style=\"border-left: 4px solid #333; padding: 10px 16px; margin-bottom: 16px; background: #f9f9f9;\"\u003e\n\u003cstrong\u003eEngine-builder setup required:\u003c\/strong\u003e Verify installed spring height, seat and open pressures, coil-bind clearance, retainer-to-seal clearance and compatibility with the valves, locks and camshafts before assembly. Published maximum lift is not a guaranteed safe lift for every cylinder-head configuration. Do not treat this kit as a drop-in RPM upgrade.\u003c\/div\u003e\n\u003cp\u003eThe Supertech SPRK-M1007D-RB-2L dual valve spring kit is listed for Nissan RB26 DOHC 24-valve engines, including RB26DETT builds. It pairs SPR-M1007D springs with matching retainers and application-specific intake and exhaust seat locators for a professionally configured valvetrain. Ships fast across Canada and the US.\u003c\/p\u003e\n\u003ch3\u003eKit Components\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e24 SPR-M1007D dual valve spring assemblies.\u003c\/li\u003e\n\u003cli\u003eRET-NRB60\/TS retainers.\u003c\/li\u003e\n\u003cli\u003eIntake seat locator specification: SEAT-TS1015.\u003c\/li\u003e\n\u003cli\u003eExhaust seat locator specification: SEAT-TS1015\/2.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThis listing is for the SPRK-M1007D-RB-2L configuration. Do not substitute specifications from the separate SPRK-TS1015\/RB26 kit. Valve locks, valves and other valvetrain components are not represented as included.\u003c\/p\u003e\n\u003ch3\u003ePublished Spring Specifications\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003ePart number: SPRK-M1007D-RB-2L\u003c\/li\u003e\n\u003cli\u003eSpring design: Dual\u003c\/li\u003e\n\u003cli\u003eSpring quantity: 24 assemblies\u003c\/li\u003e\n\u003cli\u003ePublished maximum lift: 15.30 mm\u003c\/li\u003e\n\u003cli\u003eCoil-bind height: 24.70 mm\u003c\/li\u003e\n\u003cli\u003eSpring rate: 12.50 lb\/mm\u003c\/li\u003e\n\u003cli\u003eOuter spring outside diameter: 28.10 mm\u003c\/li\u003e\n\u003cli\u003eOuter spring inside diameter: 20.00 mm\u003c\/li\u003e\n\u003cli\u003eInner spring outside diameter: 20.00 mm\u003c\/li\u003e\n\u003cli\u003eInner spring inside diameter: 15.20 mm\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eEngine Compatibility\u003c\/h3\u003e\n\u003cp\u003eListed application: Nissan RB26 DOHC 24-valve. Confirm the cylinder-head configuration and exact component requirements before ordering, particularly with modified heads, aftermarket valves, different valve lengths or non-standard camshafts. Engine-based compatibility does not establish universal fitment for every vehicle or engine swap.\u003c\/p\u003e\n\u003ch3\u003eInstallation Notes\u003c\/h3\u003e\n\u003cp\u003eHave a qualified engine builder measure and configure the valvetrain using current Supertech specifications. Establish the required pressures and operating clearances for the actual camshaft lift and intended use. Confirm retainer and valve-lock compatibility before assembly. No specific horsepower capacity or maximum engine speed is guaranteed.\u003c\/p\u003e\n\u003cp\u003eShips fast across Canada and the US.\u003c\/p\u003e","brand":"Supertech","offers":[{"title":"Default Title","offer_id":51654112608423,"sku":"SPTSPRK-M1007D-RB-2L","price":1291.12,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0555\/8344\/1063\/files\/34841158b0d8bc77bb7690976e861e49_f5b8582b-b2ac-44fe-bb64-5e91c31695c6.png?v=1793098767","url":"https:\/\/www.straightsiximports.com\/products\/supertech-nissan-rb26det-24v-dual-valve-spring-kit-2","provider":"Straight Six Imports","version":"1.0","type":"link"}