Hot Cams Racing Cam Stage 2 Camshaft 4289-2E 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 ATV’s engine response with the Hot Cams Racing Cam Stage 2 camshaft, manufacturer part number 4289-2E and vendor part number 68-2185. Designed for high-performance racing applications, this camshaft uses Hot Cams Improved Throttle Response (ITR) technology to enhance throttle control, combustion efficiency, and rider feedback throughout the usable throttle range.

Unlike camshaft profiles developed solely for dyno power, the Hot Cams Stage 2 design focuses on both power production and real-world throttle response. Carefully engineered opening ramps help promote a cleaner intake charge and a more efficient combustion cycle, giving the engine sharper response and improved feel at all throttle openings. The camshaft is designed for use with stock valve springs and rocker arms in most applications, and no core is required.

This Hot Cams camshaft fits 2009-2017 Yamaha YFZ450R models and the 2010 Yamaha YFZ450X. Verify the model year and engine application before installation. This product is intended for racing use and is not legal for use in California on pollution-controlled vehicles. A California race-use waiver may be available. Professional installation and appropriate engine setup are recommended to achieve the best results.

Features:

• High-performance Stage 2 racing camshaft for select Yamaha ATV applications
• Improved Throttle Response (ITR) technology enhances throttle control and engine feel
• Engineered opening ramps promote a cleaner intake charge and efficient combustion
• Designed to use stock valve springs and rocker arms in most applications
• No core required
• Adjustable cam sprocket supplied with some applications
• Fits 2009-2017 Yamaha YFZ450R and 2010 Yamaha YFZ450X
• Manufacturer: Hot Cams
• Manufacturer part number: 4289-2E
• Vendor part number: 68-2185
• Race use only in California; not legal for use on 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