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 Cyl Head, 1x Insert + O-rings)
 
* Select the insert / volume you need from list, If you require a volume not in list just comment in purchase (custom volume, no addtional cost)

Use VHM standard insert:
AE32050-E (dome piston)
AE32052-H (flat top piston)
 
More engine power
Better heat transference
More resistance to detonation
Exchangeable combustion chambers available