Hot Cams Stage 1 Racing Camshaft 4287-1E for Yamaha YFZ450R and YFZ450X

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!

Upgrade 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.

The 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.

Fitment: 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.

Manufacturer: Hot Cams. Brand: Hot Cams. Vendor part number: 4287-1E. Model: Stage 1 Racing Camshaft.

Features:

• High-performance racing camshaft for Yamaha YFZ450R and YFZ450X applications
• Improved Throttle Response (ITR) technology enhances engine response and rider control
• Engineered opening ramps promote a cleaner intake charge and more efficient combustion cycle
• Designed to use stock valve springs and rockers in most applications
• No core required
• Adjustable cam sprockets supplied with select applications
• Race use only in California and not legal for use on California pollution-controlled vehicles

Fitment:
2009 Yamaha YFZ450R
2010 Yamaha YFZ450R
2010 Yamaha YFZ450X
2011 Yamaha YFZ450R
2011 Yamaha YFZ450X
2012 Yamaha YFZ450R
2013 Yamaha YFZ450R
2014 Yamaha YFZ450R
2015 Yamaha YFZ450R
2016 Yamaha YFZ450R
2017 Yamaha YFZ450R
2018 Yamaha YFZ450R
2019 Yamaha YFZ450R
2020 Yamaha YFZ450R
2021 Yamaha YFZ450R