Description
If you’re running a CR500 at the edge of performance, your reed valve assembly directly impacts how quickly your engine responds to throttle input and how much power you’re actually making. The Boyesen Pro Series Reed elevates both metrics by pairing carbon fiber’s responsiveness with a proven dual-stage design that maintains durability where traditional carbon reeds fail. This is the upgrade that separates competitive edge from the pack.
Technical Specifications:
- Material: Carbon fiber top reed
- Bottom reed: Fiberglass/epoxy composite
- Design: Dual-stage reed system
- Fitment: CR500 PRO-56
- Quantity: One cylinder set
- Installation: Bolt-on replacement
- Performance: Maximized acceleration and throttle response
- Advantage: Extended reed life vs. full carbon
- MPN: PRO-56









