Description
If you’re running a RM125 two-stroke, your reed valve assembly directly controls how efficiently your engine breathes at every RPM range. The Boyesen Racing Reed replaces the factory limitation with a dual-stage design that optimizes throttle response at partial throttle while unlocking peak horsepower in the high-RPM band—delivering measurable gains in both rideability and race performance. Paired with the included Rev-Plate, this upgrade eliminates the stock reed stop constraint and lets your engine flow freely where it matters most.
- Boyesen dual-stage design
- Lightweight top reed
- Ported bottom reed
- Crisp throttle response
- Maximum high-RPM flow
- Rev-Plate included
- Fits RM125 ’04–’08
- Bolt-on installation
- MPN: 6122
