Description
Reed valves are the circulatory system of your two-stroke engine—they control fuel mixture flow and directly impact throttle response, peak power, and low-end grunt. The Boyesen SSF031 fiber reeds are engineered to superior tolerances compared to OEM stock reeds, delivering faster valve actuation and more consistent performance across the entire RPM band. If you’re serious about extracting every bit of performance from your YZ125, upgrading to a quality aftermarket reed set is one of the most cost-effective modifications you can make.
- Boyesen Super Stock design
- Single-stage fiber construction
- YZ125 (’94–’00) fitment
- OEM-matched specifications
- Bolt-on installation
- One set per cylinder
- Improved throttle response
- Enhanced durability vs. stock
- Optimized across all RPMs
- Carbon fiber option available









