This insert with 8.00cc volume is the VHM standard for KTM 85SX with 12° piston 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 AA33145 and VHM 12° piston APKT08521707
- Best overall performance
- Quick to adjust
- Good resistance to detonation