{"product_id":"hot-cams-stage-1-racing-camshaft-4287-1e-for-yamaha-yfz450r-and-yfz450x","title":"Hot Cams Stage 1 Racing Camshaft 4287-1E for Yamaha YFZ450R and YFZ450X","description":"WE RACE ON THE TRACK, NOT THE DYNO! Most camshaft designs are developed only on a dyno. Good camshaft designs not only increase power, they also improve throttle response. However, more power and better throttle response is a difficult design problem. Hotcams’ ITR technology solved this dilemma through highly engineered opening ramps not found on other cams. Using ITR technology, the critical ramp area is designed to give your engine a cleaner intake charge and a more efficient combustion cycle, making your engine more responsive at all throttle openings and giving the rider better feel and control of the engine! You will notice the difference!\n\u003cp\u003eUpgrade your Yamaha sport ATV with the Hot Cams Stage 1 Racing Camshaft, manufacturer part number 4287-1E. Designed for responsive performance, this high-performance camshaft uses Hot Cams Improved Throttle Response (ITR) technology to optimize valve opening ramps. The result is a cleaner intake charge, a more efficient combustion cycle, and improved engine response across the throttle range.\u003c\/p\u003e\u003cp\u003eThe Hot Cams 4287-1E camshaft is designed for use with stock valve springs and rockers in most applications, helping simplify installation while providing a performance-focused upgrade. No core is required. This camshaft is intended for racing and competition use and is engineered to improve throttle response, rider control, and overall engine feel rather than relying solely on peak dyno horsepower.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eFitment:\u003c\/strong\u003e Fits 2009–2017 Yamaha YFZ450R and 2010 Yamaha YFZ450X models. Verify year, model, and engine configuration before installation. Some Hot Cams applications include adjustable cam sprockets; confirm application-specific contents before ordering. This product is not legal for use in California on pollution-controlled vehicles and is intended for race use only in California; a waiver may be available.\u003c\/p\u003e\u003cp\u003eManufacturer: Hot Cams. Brand: Hot Cams. Vendor part number: 4287-1E. Model: Stage 1 Racing Camshaft.\u003c\/p\u003e\u003cp\u003e\u003cb\u003eFeatures:\u003c\/b\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eHigh-performance racing camshaft for Yamaha YFZ450R and YFZ450X applications\u003c\/li\u003e\n\u003cli\u003eImproved Throttle Response (ITR) technology enhances engine response and rider control\u003c\/li\u003e\n\u003cli\u003eEngineered opening ramps promote a cleaner intake charge and more efficient combustion cycle\u003c\/li\u003e\n\u003cli\u003eDesigned to use stock valve springs and rockers in most applications\u003c\/li\u003e\n\u003cli\u003eNo core required\u003c\/li\u003e\n\u003cli\u003eAdjustable cam sprockets supplied with select applications\u003c\/li\u003e\n\u003cli\u003eRace use only in California and not legal for use on California pollution-controlled vehicles\u003c\/li\u003e\n\u003c\/ul\u003e\u003cbr\u003e\nFitment:\u003cbr\u003e\n2009 Yamaha YFZ450R\u003cbr\u003e\n2010 Yamaha YFZ450R\u003cbr\u003e\n2010 Yamaha YFZ450X\u003cbr\u003e\n2011 Yamaha YFZ450R\u003cbr\u003e\n2011 Yamaha YFZ450X\u003cbr\u003e\n2012 Yamaha YFZ450R\u003cbr\u003e\n2013 Yamaha YFZ450R\u003cbr\u003e\n2014 Yamaha YFZ450R\u003cbr\u003e\n2015 Yamaha YFZ450R\u003cbr\u003e\n2016 Yamaha YFZ450R\u003cbr\u003e\n2017 Yamaha YFZ450R\u003cbr\u003e\n2018 Yamaha YFZ450R\u003cbr\u003e\n2019 Yamaha YFZ450R\u003cbr\u003e\n2020 Yamaha YFZ450R\u003cbr\u003e\n2021 Yamaha YFZ450R","brand":"HOT CAMS","offers":[{"title":"Default Title","offer_id":67554685714667,"sku":"68-2183","price":320.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0611\/3882\/9547\/files\/64f4-5aff24663ae69.jpg?v=1790743080","url":"https:\/\/ctracingservices.com\/products\/hot-cams-stage-1-racing-camshaft-4287-1e-for-yamaha-yfz450r-and-yfz450x","provider":"Cascade Tire \u0026 Racing Services","version":"1.0","type":"link"}