The Boyesen Pro Series Reed Set is a replacement reed petal set for Yamaha YZ250 two-stroke motocross models from 2000 to 2004. It is designed for use in the intake reed valve system, where it controls fuel-air flow into the engine and supports throttle response across low, mid and high RPM operation.
Features
- Direct replacement reed set for Boyesen Rad Valve applications.
- Dual-stage reed design for controlled intake response.
- Low-tension top reeds support immediate throttle response.
- Intermediate reed stage supports mid-range response and engine pull.
- High-tension base reed supports stability during high-RPM operation.
- Supplied as a set with two power reeds and six small pan head bolts.
Specifications
- Product type: replacement reed valve petal set.
- Construction: carbon fibre top reed with fibreglass/epoxy bottom reed.
- Reed design: dual-stage / multi-stage construction.
- Compatible Boyesen assemblies: RAD34H and RAD34I.
Cross-Reference OEM Part Numbers
- PRO-178
- PSR-178
Vehicle Fitments
- Yamaha YZ250, 2000-2004.
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