This insert has a lower volume / higher compression ratio, meaning more low and middle range torque. This improves acceleration and gives an increased torque feeling when exiting corners. However, keep in mind that this compromises top speed. 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 AA33210
Race fuel or elevation
For use see insert chart table
Quick to adjust
The insert does not fit into an OEM head, only a VHM cylinder head.
Specifications
Part number
AE32339-B
Type
Optional
Volume [cc]
25.00
Piston height [mm]
0.00
Squish [mm]
1.90
Piston crown shape
Flat top
Bore
Ø72
Applications
Application
Make
Model
Year
Motocross
KTM
300SX
2023-2024
Motocross
KTM
300XC
2023-2024
Motocross
Husqvarna
TX300
2023-2024
Motocross
GasGas
EX300
2024