Yamaha YZ 250 (CG 20) [2005] - Wheel membrane block - Yamaha YZ250

BOYESEN wheel membrane block for Yamaha YZ 250

The BOYESEN wheel membrane block was developed specifically for the Yamaha YZ 250 (CG 20) built in 2005. As an intake system, it supports flow-optimized intake and is tailored to the requirements of this motorcycle model.

Flow-optimized design

The membrane block is made of 100% aluminum and has an optimized inner surface. A 4-way diffuser directs the air flows specifically and is designed to avoid pressure losses in the intake area. This design is one of the technical solutions of BOYESEN intake systems to optimize power, torque and elasticity.

Model-specific membrane plates

• Variable flexibility for model-specific coordination
• Aerospace-grade carbon membrane plates
• Rubber coated and hydrocarbon resistant
• Multiple opening levels thanks to multi-stage reed timing

The membrane plates are designed for a longer service life of the seals. The system also uses BOYESEN technologies to optimize the interior surfaces and model-specific design of the membrane suspension.

Vehicle assignment and assembly

Suitable for the Yamaha YZ 250 (CG 20), built in 2005. Intake nozzle and fastening clamps are included in delivery. The membrane block is intended for direct assembly without modification.

Factual note

Designed for competition use, the RC2 diaphragm blocks optimize intake airflows. This enables higher efficiency, optimized performance and better pulling power with the Yamaha YZ 250.