{"product_id":"kpmi-valve-spring-kit-kibblewhite-hd-600-lift-twin-cam-88-103-191-27004s","title":"KPMI Valve Spring Kit - Kibblewhite HD .600 Lift Twin CAM 88-103\" — Harley-Davidson (2004-2017)","description":"\u003cp\u003eKPMI Kibblewhite valve spring kit engineered for .600 lift Twin Cam 88–103 applications, wound from premium Kobe Super-Clean Chrome Silicon wire and heat-treated for durability. Designed using advanced spring simulation software to optimize harmonics, stress, and operating RPM for reliable high-lift performance.\u003c\/p\u003e\n\u003ch2\u003eFeatures\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003ePremium Kobe Super-Clean Chrome Silicon wire construction\u003c\/li\u003e\n  \u003cli\u003eHeat-treated and stress-relieved\u003c\/li\u003e\n  \u003cli\u003eShot peened for fatigue resistance\u003c\/li\u003e\n  \u003cli\u003eEngineered for .600 lift Twin Cam 88–103 cams\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eSpecifications\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eBrand:\u003c\/strong\u003e KPMI\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eManufacturer Part #:\u003c\/strong\u003e 20-20364\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eLength:\u003c\/strong\u003e 4.9 in\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWidth:\u003c\/strong\u003e 7.45 in\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHeight:\u003c\/strong\u003e 2.3 in\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWeight:\u003c\/strong\u003e 1.46 lbs\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eFitment\u003c\/h2\u003e\n\u003cp\u003eDesigned for Twin Cam 88–103 engines with .600 lift camshafts. Verify your specific cam profile and lift before ordering.\u003c\/p\u003e\n\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\n\u003ch3\u003eWhat lift camshaft is this kit designed for?\u003c\/h3\u003e\n\u003cp\u003eThis kit is engineered specifically for .600 lift Twin Cam 88–103 cams. Confirm your cam's lift specification before purchase.\u003c\/p\u003e\n\u003ch3\u003eAre these compatible with stock Twin Cam heads?\u003c\/h3\u003e\n\u003cp\u003eYes, these mount in stock Twin Cam 88–103 head positions. Ensure proper valve clearance and seat contact after installation.\u003c\/p\u003e\n\u003ch3\u003eDo I need to install a new cam at the same time?\u003c\/h3\u003e\n\u003cp\u003eThese springs are matched to .600 lift cams. If upgrading your cam, order springs engineered for your new cam's specifications.\u003c\/p\u003e\n\u003ch3\u003eWhat makes KPMI springs different?\u003c\/h3\u003e\n\u003cp\u003eKPMI uses premium Kobe Chrome Silicon wire, heat-treat, stress-relief, and shot peening, plus computer-aided design for harmonic and stress optimization specific to your application.\u003c\/p\u003e","brand":"KPMI","offers":[{"title":"Default Title","offer_id":53035005608047,"sku":"191-27004S","price":142.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0608\/6734\/6543\/files\/output_764cedfb-8c35-479f-a4cb-9bc77eb7f65a.png?v=1779559016","url":"https:\/\/vtwinbikers.com\/products\/kpmi-valve-spring-kit-kibblewhite-hd-600-lift-twin-cam-88-103-191-27004s","provider":"Vtwinbikers","version":"1.0","type":"link"}