Hot Cams Stage 3 Racing Camshaft 4303-3E 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!

Increase engine responsiveness and racing performance with the Hot Cams Stage 3 Racing Camshaft, manufacturer part number 4303-3E. Designed for select Yamaha YFZ450R and YFZ450X models, 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 throttle response across the operating range.

Unlike camshaft designs developed solely on a dyno, the Hot Cams Stage 3 camshaft is engineered to deliver both increased power and a more controlled engine feel on the track. Its ramp design helps provide stronger response at varying throttle openings, giving the rider improved control and feedback during competition use. The camshaft is designed for racing applications and does not require a core exchange.

Installation is intended for compatible Yamaha engines using stock valve springs and rockers in most applications. Adjustable cam sprockets are supplied with some models, depending on application. Verify engine specifications and installation requirements before purchase. This Hot Cams camshaft fits 2009–2017 Yamaha YFZ450R models and the 2010 Yamaha YFZ450X. It 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.

Features:

• High-performance Stage 3 racing camshaft for increased engine performance
• Hot Cams Improved Throttle Response (ITR) technology enhances throttle response and engine control
• Engineered opening ramps promote a cleaner intake charge and efficient combustion cycle
• Designed to use stock valve springs and rockers in most applications
• No core exchange required
• Adjustable cam sprockets supplied with some applications
• Fits 2009–2017 Yamaha YFZ450R and 2010 Yamaha YFZ450X models
• Race use only in California and 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