Hot Cams Stage 1 Racing Camshaft 4035-1E for Yamaha WR400F, WR426F and YZ400F/YZ426F

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 four-stroke with the Hot Cams Stage 1 Racing Camshaft, manufacturer part number 4035-1E and vendor part number 68-2061. This high-performance camshaft is engineered for improved throttle response, stronger engine performance, and better rider control across the usable throttle range. Unlike camshafts developed solely for dyno power, Hot Cams designs its products to deliver a more responsive feel on the track.

Hot Cams Improved Throttle Response (ITR) technology uses carefully engineered opening ramps to promote a cleaner intake charge and a more efficient combustion cycle. The result is sharper response at all throttle openings and improved engine feel during acceleration. This Stage 1 racing camshaft is designed for applications that use stock valve springs and rockers in most configurations, and no core is required. Adjustable cam sprockets are supplied with some models where applicable.

Fitment: Designed for select Yamaha off-road motorcycles, including the 1998–2000 Yamaha WR400F, 2001–2002 Yamaha WR426F, 1998–2000 Yamaha YZ400F, and 2000–2002 Yamaha YZ426F. Verify model year, engine configuration, and installation requirements before ordering. The Hot Cams 4035-1E is intended for racing and performance use; professional installation and appropriate valve-train inspection are recommended.

This product is not legal for use in California on pollution-controlled vehicles. In California, it is intended for race use only, and a waiver may be available. Follow all applicable emissions regulations and manufacturer installation instructions.

Features:

• High-performance Stage 1 racing camshaft for select Yamaha WR400F, WR426F, YZ400F, and YZ426F models
• Hot Cams Improved Throttle Response (ITR) technology for sharper response and improved engine control
• Engineered opening ramps help 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 some models where applicable
• Race-use product; not legal for use in California on pollution-controlled vehicles

Fitment:
1998 Yamaha WR400F
1998 Yamaha YZ400F
1999 Yamaha WR400F
1999 Yamaha YZ400F
2000 Yamaha WR400F
2000 Yamaha YZ426F
2001 Yamaha WR426F
2001 Yamaha YZ426F
2002 Yamaha WR426F
2002 Yamaha YZ426F