VHM pistons are 100% CNC machined from high quality solid billet material. With our Takisawa lathe we are able to turn elliptical shaped pistons with very high precision.

High performance
Longevity and keeps performance during lifetime
Non-circular piston profile (and inside coating)
Resistance to detonation

The 2023 125SX machines require a piston to bore clearance of 0.05mm.

These are a twin ring 12 degree top piston and must be used with the VHM 12 Degree head inserts.