Description
Stock reed valves limit your CR250’s potential across the RPM band, forcing you to choose between low-end responsiveness and high-RPM power. Boyesen’s dual-stage design eliminates this compromise by pairing a lightweight top reed for crisp partial-throttle control with a ported bottom reed that maximizes flow and horsepower when you’re at full song. Pair this with the included Rev-Plate to unlock the reeds’ full potential and feel the difference in throttle character and peak performance.
- Dual-stage reed design
- Lightweight top reed
- Ported bottom reed
- Improved throttle response
- Increased peak horsepower
- Rev-Plate included
- Direct bolt-on fitment
- CR250 2005–2007 specific
- MPN: 6128









