YAMAHA YZ125 05'-20' VHM Piston kit (20mm small end bearing, +3mm conrod) and Special Insert


  • $259.99

VHM piston kit

This +3mm conrod piston is specially developed for a maximum performance gain. It must be used in combination with a +3mm longer conrod. This piston is 100% CNC machined from high quality material and has a non-circular profile. They stand for high performance, longevity and keeping high performance during it's lifetime.

  • High performance
  • Inside coating and special Z-clips
  • Longevity
  • Keeps high performance during lifetime

This piston needs a clearance of 0.05mm! Must be used in combination with a +3mm longer conrod and 20mm small end bearing.

*These kits are made to order, please allow 1 week to ship

VHM insert

This insert with 11.00cc volume is the VHM standard for Yamaha YZ125 and is developed for the best overall performance. The combustion chamber fits the VHM cylinder head perfectly and is easy to change. The last numbers of the part number are engraved on the insert for indentification.

Use in combination with VHM head AA33077

  • Best overall performance
  • Quick to adjust
  • Good resistance to detonation

This insert does not fit into an OEM head, only a VHM cylinder head.


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