Description
Boyesen racing reeds are engineered to deliver measurable flow improvements across your entire power band—from initial throttle response to peak acceleration. Laboratory flow analysis confirms that Boyesen’s dual-stage reed design permits greater flow velocity at all operating pressures, giving you the edge over standard reed setups. Whether you’re chasing lap times or building a high-performance machine, upgrading to proven reed technology is one of the most cost-effective performance gains available.
- Dual-stage reed design
- Laboratory flow tested
- Improved flow velocity
- Enhanced startup response
- Increased acceleration performance
- Fits Suzuki/Yamaha 642
- Bolt-on installation
- MPN: 642
