{"product_id":"top-end-service-kit-yam-1","title":"Top End Service Kit Yam","description":"\u003cp\u003eThese pistons have been designed to incorporate a domed piston deck, resulting in a high compression profile and offsetting any change in volume caused by valve dishes. While maintaining compression through piston shape, we*ve minimized moving mass in our stainless steel valvetrain conversion by lightening our steel valves. The conversion to Black Diamond* Stainless Steel Valves offers up to double the life over stock Titanium valves without a loss in performance.\u003cbr\u003eFeatures:\u003c\/p\u003e\u003cul\u003e\n\u003cbr\u003e\u003cli\u003eDesigned specifically for the performance demands of popular racing MX Bikes and Quads\u003c\/li\u003e\n\u003cbr\u003e\u003cli\u003ePistons designed to maintain the stock compression after the effects of the dished stainless valves\u003c\/li\u003e\n\u003cbr\u003e\u003cli\u003e2618 Alloy Fully CNC Machined Piston with performance skirt coating\u003c\/li\u003e\n\u003cbr\u003e\u003cli\u003eBlack Diamond* Stainless Steel conversion system significantly increases valve durability\u003c\/li\u003e\n\u003cbr\u003e\u003cli\u003eLightweight Racing Spring Kit compatible with high performance cams\u003c\/li\u003e\n\u003cbr\u003e\u003cli\u003eAll of the gaskets, rings, pins and seals required for a top end rebuild\u003c\/li\u003e\n\u003cbr\u003e\u003cli\u003eIncludes Piston, Rings, Clips and Pin\u003c\/li\u003e\n\u003cbr\u003e\u003cli\u003eIncludes Top End Gasket Kit by Cometic\u003c\/li\u003e\n\u003cbr\u003e\u003cli\u003eIncludes KPMI? S.S. Black Diamond* Valves, Stock Head Dia.\u003c\/li\u003e\n\u003cbr\u003e\u003cli\u003eIncludes Dual Spring Titanium Retainer Spring Kit, Which Allows for 0.440* In. and Ex. Valve Lift\u003c\/li\u003e\n\u003cbr\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eFitment\n\u003cbr\u003eYamaha YFZ450R  2009\n\u003cbr\u003eYamaha YFZ450R  2010\n\u003cbr\u003eYamaha YFZ450R  2011\n\u003cbr\u003eYamaha YFZ450R  2012\n\u003cbr\u003eYamaha YFZ450R  2013\n\u003cbr\u003eYamaha YFZ450R  2014\n\u003cbr\u003eYamaha YFZ450R  2015\n\u003cbr\u003eYamaha YFZ450R  2016\n\u003cbr\u003eYamaha YFZ450R  2017\n\u003cbr\u003eYamaha YFZ450R  2018\n\u003cbr\u003eYamaha YFZ450R  2019\n\u003cbr\u003eYamaha YFZ450R  2020\u003c\/p\u003e","brand":"KPMI","offers":[{"title":"Default Title","offer_id":45413244764390,"sku":"191-44035K","price":736.95,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0675\/5257\/5718\/files\/d7b1-609ea74d3362b_4a18323e-858a-4fd8-90e3-4f1a93e8a4a0.jpg?v=1728465502","url":"https:\/\/osburns.com\/products\/top-end-service-kit-yam-1","provider":"Osburn's Family Business","version":"1.0","type":"link"}