Description
Stock reed systems limit your RM250’s potential across the RPM band—they compromise either low-end response or high-RPM flow, forcing you to choose between performance characteristics. Boyesen’s dual-stage reed design eliminates this trade-off by pairing a lightweight, crisp-responding top reed with a high-flow ported bottom reed, delivering responsive throttle control at partial throttle while unlocking maximum horsepower when you’re in the power band. The included Rev-Plate replacement reed stop allows unrestricted reed movement, further optimizing efficiency and eliminating the performance ceiling of restrictive OEM hardware.
- Boyesen patented dual-stage design
- Lightweight top reed
- Ported bottom reed
- Crisp low-RPM response
- Maximum high-RPM flow
- Includes Rev-Plate reed stop
- Bolt-on installation
- RM250 2004–2008 fitment
- MPN: 6123
