Boyesen Power Reeds Valves Yamaha YZ 80 93-01

The Boyesen system consists of 4 reeds made of fiberglass.

The smallest ones are those located at the top; these are usually thinner to promote acceleration and engine filling at low revolutions. The thicker ones, on the other hand, operate at high revolutions to provide greater flow to the engine.

With this system, greater efficiency is achieved, with a much faster and more energetic power delivery at all engine speeds.

Attention! Only compatible with the following models:

• Yamaha YZ 80 1993-2001

ALT: 648-R