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)
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