{"product_id":"rkr-82-performance-valve-spring-kit-ecotec","title":"RKR 82# Performance Valve Spring Kit - Ecotec","description":"\u003cp\u003eRunning bigger camshafts? These springs are a must. Our 82# valve springs are built to handle the increased lift and duration of aggressive cam profiles, keeping valve control tight at high RPM and preventing valve float — so your engine keeps making power exactly where you need it.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhy you need this kit:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eHigher spring pressure keeps valves seated properly under increased cam lift\u003c\/li\u003e\n\u003cli\u003ePrevents valve float and bounce at higher RPM\u003c\/li\u003e\n\u003cli\u003eEssential support component for our Endurance and Stage 2 Race camshafts\u003c\/li\u003e\n\u003cli\u003eBuilt for reliability under sustained high-performance use\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eProven Performance\u003c\/strong\u003e\u003cbr\u003eWe've tested these springs to \u003cstrong\u003e8,000 RPM on stock retainers\u003c\/strong\u003e with zero valve float and zero failures — giving you confidence this kit can handle serious RPM without needing to upgrade retainers.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eDrop-In Fitment\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eMost Kits require you to source new retainers or valve seals — these springs are a direct drop-in fit with your OEM retainers and valve seals, keeping install straightforward and your parts list short.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eEasy Install\u003c\/strong\u003e\u003cbr\u003eDesigned to drop in without extra machining or modification, making this an easy add-on for anyone already in the valvetrain for a cam swap.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eCompatibility:\u003c\/strong\u003e\u003cbr\u003eDesigned specifically for the Ecotec platform.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eRecommended pairing:\u003c\/strong\u003e\u003cbr\u003eRequired when running our Endurance or Stage 2 Race Camshafts, along with a mechanical timing tensioner and extended (or solid) lifter kit. Running upgraded cams without proper spring support can lead to valve float and engine damage.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eFAQ\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eDo I need new retainers or seals to run these springs?\u003c\/strong\u003e\u003cbr\u003eNo — these are a drop-in fit with your OEM retainers and valve seals. No extra parts or machining required.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhat cams require this spring kit?\u003c\/strong\u003e\u003cbr\u003eOur Endurance and Stage 2 Race Camshafts both require upgraded valve springs to maintain proper valve control at increased lift and duration.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhat RPM can these handle?\u003c\/strong\u003e\u003cbr\u003eWe've tested these springs to 8,000 RPM on stock retainers with zero valve float or failure.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhat's the seat pressure on these springs?\u003c\/strong\u003e\u003cbr\u003e82 lb at installed height.\u003c\/p\u003e","brand":"Rough Knuckle Racing","offers":[{"title":"Default Title","offer_id":67721390063699,"sku":null,"price":200.0,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0654\/8615\/9955\/files\/FullSizeRender.jpg?v=1792184435","url":"https:\/\/roughknuckleracing.com\/products\/rkr-82-performance-valve-spring-kit-ecotec","provider":"Rough Knuckle Racing","version":"1.0","type":"link"}