Description
The stock reed valve is often the first bottleneck in two-stroke performance—it can’t keep pace with aggressive piston speeds, causing hesitation and power loss. The Boyesen Pro Series Reed eliminates that constraint with a dual-stage carbon fiber design that responds instantly to throttle input, delivering smooth, predictable power across the entire RPM range. If you’re serious about maximizing acceleration and horsepower on your YZ250, this is the upgrade that pays dividends every time you twist the throttle.
- Dual-stage reed design
- Carbon fiber top reed
- Fiberglass/epoxy bottom reed
- Boyesen exclusive technology
- Increased horsepower output
- Enhanced torque delivery
- Quick throttle response
- Superior acceleration performance
- Extended reed lifespan
- No durability compromise
- Cylinder set (one required)
- YZ250 ’99–’00 fitment
- MPN: PRO126
- Bolt-on installation
