HOT Cams Racing Camshaft Stage 1 for Yamaha WR and YZ Series - Part 4002-1IN

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!

Enhance your Yamaha offroad motorcycle's performance with the HOT Cams Racing Camshaft Stage 1 (Part 4002-1IN). Designed specifically for models such as the Yamaha WR and YZ series from 1998 to 2002, this high-performance camshaft delivers significant improvements in throttle response and overall engine responsiveness. Utilizing proprietary ITR technology, the camshaft features highly engineered opening ramps that optimize intake charge and combustion efficiency, providing a noticeable ride quality upgrade. Whether you’re tackling tough trails or competitive racing, this camshaft ensures your engine operates at peak responsiveness without requiring core exchanges, making installation straightforward for most applications.

Constructed to be compatible with stock valve springs and rockers in most cases, the HOT Cams Stage 1 camshaft offers a reliable upgrade that enhances engine performance without extensive modifications. Some models include adjustable cam sprockets, allowing fine-tuning of timing for optimal power delivery. This camshaft is a race-use-only component in California, and a waiver is available for legal use in pollution-controlled vehicles. Designed for offroad applications, this product is ideal for riders seeking to maximize engine power and throttle control in demanding environments.

Incorporating advanced ITR technology, the HOT Cams Stage 1 camshaft is engineered for enthusiasts who race or ride aggressively and demand consistent, high-level engine performance. Its durable construction and precise design make it a valuable upgrade for your Yamaha motorcycle, whether for competitive racing or serious offroad adventures. Trust HOT Cams to deliver innovative components that improve engine response and overall riding experience, helping you stay ahead on the trail or track.

Features:

• High performance racing camshaft for Yamaha WR and YZ series

• No core required for easy installation

• Designed to use stock valve springs and rockers in most applications

• Adjustable cam sprockets included with some models for fine-tuning

• Enhanced throttle response through ITR technology

• Race use only in California; waiver available for legal use

Product Type: Engine
Segment: Offroad
Division: Engine
Class: Camshafts & Components
Sub Class: Camshafts

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