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, as well as 5 copper washers and 5 nutcaps.

Use VHM standard insert:
AE32256-L (1990 - 1991 dome piston)
AE32256-E (1992 - 1999 flat top piston)

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