Boyesen Yamaha Pro Series Carbon Reed Valve

BOYESEN Pro series carbon flap.
Carbon reed valves allow you to control 100% ready-made engines. Harder, more resistant and more dynamic, they contribute to the optimization of engine filling and volume. Their composition helps to avoid vibrations of ready-made engines at high speeds.

Installation on original reed valves.

Adaptability:

PRO-77 -1200cc (97-99) Limited

Pro-40 - 1100cc Limited

Pro-36 - Superjet (96-14) / Blaster (96) Limited