{"product_id":"ref-65-721-fk","title":"KIBBLEWHITE H\/LIFT VALVE SPRING\/RETAINER KIT YAMAHA WR250F 01-12, YZ250F 01-12","description":"\u003cbody\u003e\n\n\n\n\n\u003cp\u003e\u003c\/p\u003e\n\u003cp\u003ePart No. 65-721  ( Ltd.) HIGH LIFT 0.380 INC.\u003cbr\u003e YAMAHA YZF\/WRF 250 01-12,  Lightweight Racing Valve Chrome Silicon Springs, Titanium Retainers, H.T. Steel lower Collars, SEALES.\u003cbr\u003e Kibblewhite # 80-80066\u003cbr\u003e Description  Intake - 0.380 Valve Lift OK\u003c\/p\u003e \u003cp\u003e40# Seat Pressure \/ 86 lb. at .380 lift\u003cbr\u003e Exhaust - 0.380 Valve Lift OK 40# Seat Pressure \/ 86 lb. at .380 lift\u003cbr\u003e KPMI takes a scientific -System- approach when designing our Valve spring kits. Each component is designed to work with the others as part of the complete system. KPMI?s engineers use our proprietary design and simulation softwares, and\u003c\/p\u003e \u003cp\u003edraw on our 70+ years of design experience to create these systems. Our design, simulation, and manufacturing processes insure compatibility of the valve spring?s force and natural frequency with the cam profile, valvetrain mass, system harmonics, and the engine RPM. Our spring manufacturing partners are U.S based companies that are ISO certified. The Super-Clean Chrome Silicon valve spring wire we use is traceable back to Kobe Japan where some of the best spring wire in the wor 65-721.SP\" partners are U.S based companies that are ISO certified. The Super-Clean Chrome Silicon valve spring wire we use is traceable back to Kobe Japan where some of the best spring wire in the world is manufactured. Combining our design and simulation protocols with this premium quality valve spring wire, and manufacturing processes including, heat treatment, stress relief, and shot peening, allow us to supply you with the best valve springs in the world.\u003c\/p\u003e\n\u003cp\u003eMajority of our listings are for a direct replacement for your original part.\u003c\/p\u003e\n\u003cp\u003eOur parts are made of quality and are designed to meet or exceed the original OEM Standards.\u003c\/p\u003e\n\u003cp\u003eOur products are often a cost effective alternative to genuine OEM Parts.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003ePlease note: \u003c\/strong\u003ethe models of bike we state in our listings are for general guidance only. Please make sure this item will fit your bike before purchasing. Also, we cannot guarantee fitment to any non-UK models. \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\n\u003c\/body\u003e","brand":"AW Motorcycle Parts","offers":[{"title":"Default Title","offer_id":55595355406710,"sku":"REF 65-721.FK","price":225.44,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0917\/7032\/3318\/files\/stock63476_1.jpg?v=1746773492","url":"https:\/\/n0jgtc-nz.myshopify.com\/products\/ref-65-721-fk","provider":"AW Motorcycle Parts","version":"1.0","type":"link"}