Description
The stock reed valve is one of the most overlooked restrictions in your intake tract—and Boyesen’s dual-stage design directly addresses this bottleneck. By optimizing flow velocity across the entire operating range, this reed improves throttle response at low RPMs while unlocking additional power throughout acceleration. If you’re serious about extracting every bit of performance from your Yamaha 624, upgrading the reed valve is one of the highest-return modifications you can make.
Technical Specifications:
- Dual-stage reed design
- Laboratory flow-tested
- Increased flow velocity
- Optimized operating pressure range
- Improved low-end response
- Enhanced mid-to-top acceleration
- OEM fitment, Yamaha 624
- Bolt-on installation
- MPN: 624
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