Hot Cams Stage 2 Racing Camshaft 4055-2E for Yamaha YZ250F

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 engine’s performance with the Hot Cams Stage 2 Racing Camshaft, manufacturer part number 4055-2E and vendor part number 68-2053. Designed for Yamaha YZ250F applications from 2001 through 2010, this high-performance camshaft uses Hot Cams Improved Throttle Response (ITR) technology to enhance throttle response, engine feel, and rider control across the throttle range.

Unlike camshaft designs developed solely for dyno power, the Hot Cams 4055-2E is engineered with carefully developed opening ramps that help promote a cleaner intake charge and a more efficient combustion cycle. The result is stronger engine response and improved throttle control for racing and other high-performance applications. This Stage 2 camshaft is designed to deliver increased performance while maintaining practical compatibility with stock valve springs and rockers in most applications.

Fitment: Fits 2001–2010 Yamaha YZ250F models. The camshaft is supplied without requiring a core exchange. Always verify engine configuration and installation requirements before fitting. This product is intended for competition use and is not legal for use in California on pollution-controlled vehicles; race-use waivers may be available.

Features:

• High-performance Stage 2 racing camshaft for Yamaha YZ250F applications
• Improved Throttle Response (ITR) technology for enhanced throttle control and engine responsiveness
• 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 exchange required
• Adjustable cam sprockets supplied with select applications
• Fits 2001–2010 Yamaha YZ250F models
• Brand: Hot Cams
• Manufacturer part number: 4055-2E
• Vendor part number: 68-2053
• Race use only in California and not legal for use on pollution-controlled vehicles

Fitment:
2001 Yamaha WR250F
2001 Yamaha YZ250F
2002 Yamaha WR250F
2002 Yamaha YZ250F
2003 Yamaha WR250F
2003 Yamaha YZ250F
2004 Yamaha WR250F
2004 Yamaha YZ250F
2005 Yamaha WR250F
2005 Yamaha YZ250F
2006 Yamaha WR250F
2006 Yamaha YZ250F
2007 Yamaha WR250F
2007 Yamaha YZ250F
2008 Yamaha WR250F
2008 Yamaha YZ250F
2009 Yamaha WR250F
2009 Yamaha YZ250F
2010 Yamaha WR250F
2010 Yamaha YZ250F
2011 Yamaha WR250F
2011 Yamaha YZ250F
2012 Yamaha WR250F
2012 Yamaha YZ250F
2013 Yamaha WR250F
2013 Yamaha YZ250F