{"product_id":"kpmi-valve-spring-kit-625-lift-h-t-steel-retainer-191-27793s","title":"KPMI Valve Spring Kit - .625 Lift H.t. Steel Retainer — Harley-Davidson Road King, Tri Glide Ultra Classic, Electra Glide Ultra Limited (2017-2020)","description":"\u003cp\u003eKPMI valve spring kit with .625 in lift capacity, wound from premium Kobe Super-Clean chrome silicon wire and heat-treated for durability. Each spring is stress-relieved and shot-peened to handle high-RPM loads while maintaining consistent valve timing across the engine's operating range.\u003c\/p\u003e\n\u003ch2\u003eFeatures\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003ePremium Kobe Super-Clean chrome silicon wire\u003c\/li\u003e\n  \u003cli\u003eHeat-treated and stress-relieved construction\u003c\/li\u003e\n  \u003cli\u003eShot-peened for fatigue resistance\u003c\/li\u003e\n  \u003cli\u003e.625 in lift capacity\u003c\/li\u003e\n  \u003cli\u003eEngineered for specific cam and RPM profiles\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 20-21850\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eLength:\u003c\/strong\u003e 6 in\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWidth:\u003c\/strong\u003e 2.25 in\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHeight:\u003c\/strong\u003e 1.75 in\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWeight:\u003c\/strong\u003e 8 lbs\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\n\u003ch3\u003eWhat engine does this kit fit?\u003c\/h3\u003e\n\u003cp\u003eThis part number is application-specific. Verify your engine displacement and year with KPMI before ordering to ensure correct spring rate and lift.\u003c\/p\u003e\n\u003ch3\u003eDo I need a spring compressor to install?\u003c\/h3\u003e\n\u003cp\u003eYes — professional valve spring installation requires a compressor tool and knowledge of proper seat pressure. Use a qualified technician if unfamiliar with cylinder head work.\u003c\/p\u003e\n\u003ch3\u003eCan I mix these with my existing springs?\u003c\/h3\u003e\n\u003cp\u003eNo — all springs in a set should be replaced together to maintain consistent valve timing and seat pressure across all cylinders.\u003c\/p\u003e","brand":"KPMI","offers":[{"title":"Default Title","offer_id":53035873173615,"sku":"191-27793S","price":332.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0608\/6734\/6543\/files\/e53d-5dfb8c496d070.jpg?v=1777529925","url":"https:\/\/vtwinbikers.com\/products\/kpmi-valve-spring-kit-625-lift-h-t-steel-retainer-191-27793s","provider":"Vtwinbikers","version":"1.0","type":"link"}