{"product_id":"racing-valve-spring-kit-6","title":"Racing Valve Spring Kit","description":"\u003cp\u003eKPMI? valve springs are wound 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.\u003cbr\u003eFeatures:\u003c\/p\u003e\u003cul\u003e\n\u003cbr\u003e\u003cli\u003e80 Lbs of Seat Pressure \/ 205 Lbs @ 0.435\" Lift (Max)\u003c\/li\u003e\n\u003cbr\u003e\u003cli\u003eSpring kit is designed for compatibility with the OEM integrated Seal\/Base (OE# 3610212) where applicable\u003c\/li\u003e\n\u003cbr\u003e\u003cli\u003eLightweight heat treated Steel Retainer and Beehive Spring reduce reciprocating mass while providing the spring forces required by high performance boosted racing applications.\u003c\/li\u003e\n\u003cbr\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eFitment\n\u003cbr\u003eYamaha WR250F  2001\n\u003cbr\u003eYamaha WR250F  2002\n\u003cbr\u003eYamaha WR250F  2003\n\u003cbr\u003eYamaha WR250F  2004\n\u003cbr\u003eYamaha WR250F  2005\n\u003cbr\u003eYamaha WR250F  2006\n\u003cbr\u003eYamaha WR250F  2007\n\u003cbr\u003eYamaha WR250F  2008\n\u003cbr\u003eYamaha WR250F  2009\n\u003cbr\u003eYamaha WR250F  2010\n\u003cbr\u003eYamaha WR250F  2011\n\u003cbr\u003eYamaha WR250F  2012\n\u003cbr\u003eYamaha WR250F  2013\n\u003cbr\u003eYamaha YZ250F  2001\n\u003cbr\u003eYamaha YZ250F  2002\n\u003cbr\u003eYamaha YZ250F  2003\n\u003cbr\u003eYamaha YZ250F  2004\n\u003cbr\u003eYamaha YZ250F  2005\n\u003cbr\u003eYamaha YZ250F  2006\n\u003cbr\u003eYamaha YZ250F  2007\n\u003cbr\u003eYamaha YZ250F  2008\n\u003cbr\u003eYamaha YZ250F  2009\n\u003cbr\u003eYamaha YZ250F  2010\n\u003cbr\u003eYamaha YZ250F  2011\n\u003cbr\u003eYamaha YZ250F  2012\n\u003cbr\u003eYamaha YZ250F  2013\u003c\/p\u003e","brand":"KPMI","offers":[{"title":"Default Title","offer_id":45412421468390,"sku":"191-24001","price":317.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0675\/5257\/5718\/files\/81b7-572a591b19bf4_cee8a67c-0df8-4315-bd49-e7badce57a64.jpg?v=1728441294","url":"https:\/\/osburns.com\/products\/racing-valve-spring-kit-6","provider":"Osburn's Family Business","version":"1.0","type":"link"}