{"product_id":"prox-steel-intake-valve-and-spring-kit-for-yamaha-yz450f-2003-2009-and-wr450f-2003-2011-part-number-28-sis2424-2","title":"PROX Steel Intake Valve and Spring Kit for Yamaha YZ450F (2003-2009) and WR450F (2003-2011) | Part Number 28.SIS2424-2","description":"Replaces the OEM valves \u0026amp; valve springs\u003cbr\u003e\u003cbr\u003eSteel, nitrided valves for increased durability and less wear under extreme conditions\u003cbr\u003e\u003cbr\u003eStronger valve springs deal with the extra weight of the steel valves\u003cbr\u003e\u003cbr\u003eSprings are made from premium chrome vanadium steel for higher performance and durability at high rpm\u003cbr\u003e\u003cbr\u003eKit contains a set of steel intake or exhaust valves plus a set of specially designed valve springs; can be installed using the OEM retainers, bases and valve seals\n\u003cp\u003eUpgrade your Yamaha motorcycle with the PROX Steel Intake Valve and Spring Kit, designed specifically for Yamaha YZ450F models from 2003 to 2009 and WR450F models from 2003 to 2011. This comprehensive kit ensures enhanced engine performance and reliable operation by replacing worn or damaged intake components. Crafted from durable steel, the intake valve provides excellent heat resistance and longevity, making it suitable for demanding riding conditions.\u003cbr\u003eIncluded in this kit are high-quality springs engineered to maintain optimal tension and valve timing, which are critical for efficient combustion and power output. The kit is ideal for rebuilds, repairs, or performance upgrades, offering a perfect fit and easy installation to get your motorcycle back on the trail or track quickly.\u003cbr\u003eDesigned by PROX, a trusted name in motorcycle parts, this kit offers a cost-effective solution for maintaining or improving engine efficiency. Proper installation of these components can help restore the engine's original performance, improve throttle response, and extend the lifespan of your valve train. Whether you're a professional mechanic or an avid rider, this kit provides the necessary components to keep your Yamaha running at peak performance.\u003c\/p\u003e\u003cp\u003e\u003cb\u003eFeatures:\u003c\/b\u003e\u003c\/p\u003e\u003cul\u003e\u003cli\u003eIncludes intake valve and spring for complete upgrade\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eMade from durable steel for heat resistance and longevity\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eDesigned specifically for Yamaha YZ450F (2003-2009) and WR450F (2003-2011)\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eEngineered to restore or improve engine performance\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eEasy to install with a precise fit for reliable operation\u003c\/li\u003e\u003c\/ul\u003e","brand":"PROX","offers":[{"title":"Default Title","offer_id":49998789804272,"sku":"111072","price":212.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0844\/1980\/5424\/files\/LG49AD5554-FC69-457F-A3D0-88E1B2FFE245.jpg?v=1783644384","url":"https:\/\/sublimepowersports.com\/products\/prox-steel-intake-valve-and-spring-kit-for-yamaha-yz450f-2003-2009-and-wr450f-2003-2011-part-number-28-sis2424-2","provider":"Sublime Powersports","version":"1.0","type":"link"}