Description
Stock reeds limit your engine’s breathing potential, restricting flow velocity across critical RPM ranges and costing you performance from cold start through peak acceleration. Boyesen’s dual-stage reed design eliminates this bottleneck through laboratory-proven flow optimization, delivering measurable gains in throttle response and top-end power. If you’re serious about maximizing your TM/Honda 690’s potential, upgrading to precision-engineered reeds is one of the highest-ROI modifications available.
- Dual-stage reed design
- Laboratory flow tested
- Increased flow velocity
- Optimized pressure range
- Enhanced startup performance
- Improved acceleration response
- TM/Honda 690 specific
- Bolt-on installation
- OEM-equivalent fitment









