Yamaha YZ 250 (CG 12) [2002] - Wheel membrane block - Yamaha YZ250

BOYESEN wheel membrane block for Yamaha YZ 250

The BOYESEN wheel membrane block is developed as a model-specific intake system for the Yamaha YZ 250 (CG 12) built in 2002. Its design aligns the intake flow specifically for an efficient gas exchange and thereby supports the engine's responsive pulling behavior.

Structure and function

• 100% aluminum membrane block with optimized internal surface
• 4-way diffuser to optimize air flows and avoid pressure losses
• Model-specific membrane plates with variable flexibility
• Aerospace-grade carbon membrane plates
• Rubber-coated, hydrocarbon-resistant membrane plates for longer seal life

The membrane plates work with several opening levels. Their model-specific tuning is tailored to the intake characteristics of the Yamaha YZ 250. The hydrocarbon-resistant design supports the long-term function of the seals in the intake area.

Assembly and scope of delivery

The scope of delivery includes the intake manifold and the fastening clamps. The membrane block is intended for direct assembly without modification. This makes the intake system suitable for a targeted revision of the intake side while at the same time matching the vehicle assignment.

Vehicle assignment

Suitable for Yamaha YZ 250 (CG 12), built in 2002.

The wheel diaphragm block construction is part of the BOYESEN product range of inlet systems and combines a flow-optimized internal geometry with model-specific diaphragm plates.