{"product_id":"btr-max-pressure-sbc-dual-spring-kit-650-lift-for-roller-rockers-sk004s","title":"BTR MAX PRESSURE SBC DUAL SPRING KIT - .650\" LIFT - FOR ROLLER ROCKERS - SK004S","description":"\u003cp\u003e\u003cstrong\u003eBTR MAX PRESSURE SBC DUAL SPRING KIT - .650\" LIFT - FOR ROLLER ROCKERS - SK004\/S\/0560\u003c\/strong\u003e\u003c\/p\u003e \u003cp\u003eBTR’s Max Pressure Spring Kit applies what we learned when designing the Platinum Spring Kit (SK001) and applies it to applications utilizing roller rockers. Due to the additional weight of roller rockers, a higher spring rate is needed to retain valvetrain stability.\u003c\/p\u003e \u003cp\u003e\u003cstrong\u003eKit includes: \u003c\/strong\u003e\u003c\/p\u003e \u003cp\u003e• SP010-1 - .650” lift BTR Max Pressure Dual Valve Springs (16)\u003c\/p\u003e \u003cp\u003e• SR004S-16 - BTR Steel Retainer Set For Max Pressure Springs\u003c\/p\u003e \u003cp\u003e• SL505060-16 - BTR Spring Locator Set; .505\" ID, .060\" Thick\u003c\/p\u003e \u003cp\u003e • VS500341-16 - BTR Valve Seal Kit\u003c\/p\u003e \u003cp\u003e • CC648-16 - Valve Lock Set\u003c\/p\u003e \u003cp\u003e\u003cstrong\u003eSpring specs: \u003c\/strong\u003e\u003c\/p\u003e \u003cp\u003e170 lbs @ 1.800”\u003c\/p\u003e \u003cp\u003e450 lbs @ 1.115”\u003c\/p\u003e \u003cp\u003eCoil bind @ 1.000”\u003c\/p\u003e \u003cp\u003e408 lbs spring rate\u003c\/p\u003e \u003cp\u003e\u003cstrong\u003eMEASURE YOUR VALVE GUIDES BEFORE PURCHASE!\u003c\/strong\u003e\u003c\/p\u003e","brand":"Brian Tooley Racing","offers":[{"title":"Default Title","offer_id":47878223298716,"sku":"SK004\/S\/0560","price":519.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0473\/3206\/5436\/files\/sk004-s-0560_1_of_1.jpg?v=1791939149","url":"https:\/\/daroracing.com\/products\/btr-max-pressure-sbc-dual-spring-kit-650-lift-for-roller-rockers-sk004s","provider":"Daro Racing","version":"1.0","type":"link"}