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 for RM125:
AE32088-003 (1996 - 2000, 2003, Dome piston)
AE32088-019 (2001 - 2002, Flat top piston)
AE32088-F (2004, Flat top piston)
AE32101-E (2005 - 2008, Flat top piston)

For RM144 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 AE32088-A.

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