Description
Reed valve performance directly impacts your engine’s throttle response and peak horsepower output. The Boyesen Pro Series PSR-209 uses a patented dual-stage design to maintain consistent reed action across the entire RPM range, eliminating the hesitation and inefficiency of traditional single-stage reeds. With a carbon fiber top reed paired to a reinforced fiberglass/epoxy bottom reed, you get maximum acceleration and torque without the accelerated wear that plagues conventional carbon fiber alternatives.
- Carbon fiber top reed
- Fiberglass/epoxy bottom reed
- Dual-stage patented design
- Quick throttle response
- Maximized horsepower/torque
- Extended reed lifespan
- Fits RAD21J
- Bolt-on installation
- MPN: PSR-209









