VHM Insert Rieju MR250 2021 - 2022 / GasGas EC250 2018 - 2019 (21.00cc)

This insert has a higher volume / lower compression ratio, meaning better overrevolution characteristics and more top speed. However, keep in mind that this compromises bottom power reaction. 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 identification.

Use in combination with VHM head AA33201

More top
Best for hard ground
Quick to adjust
The insert does not fit into an OEM head, only a VHM cylinder head.

Specifications
Part number
AE32321-F
Type
Optional
Volume [cc]
21.00
Piston height [mm]
-1.00
Squish [mm]
1.60
Piston crown shape
Dome
Bore
Ø66.40
Applications
Application
Make
Model
Year
Motocross
Rieju
MR250
2021-2022
Motocross
GasGas
EC250
2018-2019