The world famous golden VHM head with exchangeable combustion chamber is specially developed for optimal power output during the whole race and has an improved water duct. It's manufactured from a high quality alloy and O-rings are used for the sealing. 1x O-ring is included. A decompression valve is also included in the box, as well as 7 copper washers and 7 nutcaps.

Starting the CR500R will be very easy with the decompression valve. Just push in the blue button and start the engine. The valve will close automatically when the engine is running.

Use VHM standard insert AE32319-C

• More engine power
• Better heat transference
• More resistance to detonation
• Exchangeable combustion chambers available
• Easy engine starting with decompression valve