Description
If you’re running a YZ125 and want noticeably sharper throttle response with measurable gains across the entire RPM band, a Boyesen radiator valve is a direct path to more usable horsepower and torque. This bolt-on upgrade optimizes your intake charge distribution, delivering the kind of low-to-mid range punch that separates competitive machines from stock setups. Installation takes minutes—no fabrication required.
Technical Specifications:
- Cast aluminum construction
- Patented dual-stage reeds
- One-piece design
- Bolt-on installation
- Fits YZ125 ’04 models
- Optimized flow velocity
- Even port distribution
- One valve per cylinder
- MPN: RAD-33I
