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.

Use VHM standard insert:
AE32100-E (YZ125 / XX125)
AE32100-F (XE125)

For YZ144 there's no VHM standard insert, but we can produce a custom insert to your specifications to match the head on your bike, or you can machine yourself with the blind insert AE32100-A.

• More engine power
• Better heat transference
• More resistance to detonation