Description
Reed valves are the circulatory system of your two-stroke engine—they control intake timing and flow to generate power. The Boyesen Racing Reed for Yamaha 644 uses laboratory-proven dual-stage geometry that accelerates intake velocity across the entire operating pressure range, delivering measurable gains from idle through peak RPM. If you’re serious about extracting every bit of performance from your engine, upgrading to a high-flow reed is one of the most cost-effective modifications available.
Technical Specifications:
- Boyesen dual-stage design
- Laboratory flow-tested
- Increased flow velocity
- Full operating range coverage
- Enhanced start-up performance
- Improved top-end acceleration
- Yamaha 644 specific
- Bolt-on installation
- OEM direct replacement
