{"product_id":"kpmi-spring-kit-610-lift-mpn-20-21300","title":"KPMI Spring Kit .610 Lift [MPN: 20-21300]","description":"\u003cdiv class=\"wrap-collapsibleMM\"\u003e\n\u003cinput id=\"collapsibleDescriptionMM4acfdba8\" class=\"collapsibleDescriptionMM toggleMM\" type=\"checkbox\"\u003e\u003clabel for=\"collapsibleDescriptionMM4acfdba8\" class=\"lbl-toggleMM\"\u003eProduct Description\u003c\/label\u003e\u003cdiv class=\"collapsible-contentMM\"\u003e\u003cdiv class=\"content-innerMM\"\u003e\n\u003cp\u003eSpring Kit .610 Lift fits H-D Evolution 84-99 Twin Cam '99-04 5\/16 Stem Valves\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003eWound from Premium Kobe Super-Clean Chrome Silicon Wire. KPMI valve springs are heat-treated, stress relieved and shot peened to insure maximum performance and life. Springs are engineered for each specific application using proprietary advanced spring design simulation, and analysis software. Engineers pay special attention to cam and spring harmonics, stress, mass and operating rpm.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eStainless steel conversion kit includes only what's needed to convert your head to the long-life stainless steel Black Diamond™ intake valves\u003c\/li\u003e\n\u003cli\u003eExtend the life of the valvetrain and intake components by as much as 4x over the OEM titanium parts\u003c\/li\u003e\n\u003cli\u003eIncludes forged one-piece stainless steel intake valves, wound chrome-silicon heat-treated wire valve springs, ultra-light titanium retainers and hardened steel bases\u003c\/li\u003e\n\u003cli\u003eComponents are created using Finite Element Analysis (F.E.A.) software, as well as proprietary camshaft analysis and spring design software\u003c\/li\u003e\n\u003cli\u003eSpecifically designed and engineered for each application\u003c\/li\u003e\n\u003cli\u003eMade in the U.S.A.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\u003c\/div\u003e\n\u003c\/div\u003e","brand":"KPMI","offers":[{"title":"Default Title","offer_id":47232546570427,"sku":"CCP-442372","price":177.72,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0637\/5230\/6875\/files\/216405_0_48.jpg?v=1764611091","url":"https:\/\/motomentum.com\/products\/kpmi-spring-kit-610-lift-mpn-20-21300","provider":"Motomentum","version":"1.0","type":"link"}