VHM Cylinder Head Insert for GAS GAS EC 125, MC 125 2000-2011

VHM offers this cylinder head insert for GAS GAS EC 125, MC 125 2000-2011. On a two-piece head, the insert (the "dome") forms the combustion chamber. Its volume and shape set the compression and the character of the engine.

Why change the insert?

The benefits:

• Match the compression to your riding and your fuel without replacing the whole head.
• A part machined from solid, to precise dimensions.
• Replace an insert marked or damaged by detonation.

When should you change the insert?

Signs of detonation, leaking O-rings or the wish to change the compression: the insert can be swapped in minutes, with new O-rings.

Specifications and fitting tips

• Manufacturer part numbers: AE32117-C (Version C (11.40 cc)), AE32117-E (Version E (11.60 cc)), AE32117-F (Version F (11.80 cc))

Available in several combustion-chamber volumes: a smaller volume raises compression (more punch, quality fuel essential), a larger one lowers it (smoother engine).

Cross-Mania tip: Fit new O-rings, tighten in a cross pattern to the specified torque and, with a higher-compression insert, use high-octane fuel.

Spare parts and items to plan

• VHM head O-rings : ATHENA · VHM
• Spark plug : NGK 3230 · NGK 3530
• Coolant : LIQUI MOLY 1 L · TWIN AIR

Compatibility

Check the exact model and year of your bike in the list below before ordering.

Fits:
GAS GAS EC 125 2011
GAS GAS EC 125 2010
GAS GAS EC 125 2009
GAS GAS EC 125 2008
GAS GAS EC 125 2007
GAS GAS EC 125 2006
GAS GAS EC 125 2005
GAS GAS EC 125 2004
GAS GAS EC 125 2003
GAS GAS EC 125 2002
GAS GAS EC 125 2001
GAS GAS EC 125 2000
GAS GAS MC 125 2011
GAS GAS MC 125 2010
GAS GAS MC 125 2009
GAS GAS MC 125 2008
GAS GAS MC 125 2007
GAS GAS MC 125 2006
GAS GAS MC 125 2005
GAS GAS MC 125 2004
GAS GAS MC 125 2003
GAS GAS MC 125 2002
GAS GAS MC 125 2001
GAS GAS MC 125 2000