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:
AE32257-E (for OEM piston)
AE32257-026 (for 12° VHM piston APKT12511673)
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