Reed valve quality for Yamaha FS1

Newly developed high quality reed valve with carbon fiber valve blades for Yamaha FS1. Flat ground surface that makes the carbon fiber blades close tightly directly against the aluminum housing instead of rubber, which makes the whole construction more stable and durable over time. The reed valve works very well in all power classes from original to heavily trimmed. THE PRODUCT FITS YAMAHA FS1 FS1-DX FS1-SE