{"product_id":"kit-ex-valve-spring-yzf450-prox-28-ses2424-1-gas-gas-exhaust","title":"KIT EX VALVE+SPRING YZF450, PROX 28.SES2424-1 GAS-GAS, EXHAUST","description":"\u003cp\u003eProx Steel Exhaust Valve\/Spring Kit\u003c\/p\u003e \u003cp\u003e\u003cbr\u003e Prox is offering a wide range of titanium into steel conversion kits. The ProX titanium into steel extends 3 times the lifespan up the OEM titanium valves. The kits contain a set of steel intake or exhaust valves plus a set of special designed stronger valve springs. due to the extra weight of the steel valve a heavier valve spring must be used! The ProX kit just replaces the OEM valves \u0026amp; valve springs and can be installed using the OEM retainers, bases\u003c\/p\u003e \u003cp\u003eand valve seats.\u003c\/p\u003e \u003cp\u003e\u003cbr\u003e Yamaha YFZ450 (2004-2009), Yamaha YZ450F (2003-2009), Yamaha  WR450F (2003-2015), Yamaha YFZ450R (2009-2015), Gas-Gas EC450F  (2013-2015),\u003c\/p\u003e \u003cp\u003ePROX 28.SES2424-1\u003c\/p\u003e","brand":"ORO2U","offers":[{"title":"Default Title","offer_id":57206188212597,"sku":"65-K102.PX","price":158.28,"currency_code":"GBP","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0555\/5011\/6136\/files\/stock63579_1.jpg?v=1779150537","url":"https:\/\/www.smxoffroad.com\/es\/products\/kit-ex-valve-spring-yzf450-prox-28-ses2424-1-gas-gas-exhaust","provider":"SMXOFFROAD Ltd","version":"1.0","type":"link"}