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This insert has a smaller volume and a higher compression ratio than our standard VHM insert, which means more torque at low and medium engine speeds. It improves acceleration and provides a greater sense of torque when exiting bends. However, bear in mind that this compromises top speed. The combustion chamber fits perfectly into the VHM cylinder head and is easy to replace. The last digits of the reference number are engraved on the insert for easy identification.
More low-power reaction
Ideal for deep sand tracks
Quick adjustment
Technical information :
Reference
VHM0908 / VHMAE32059-H
Use
All-terrain
Compression
High compression
Volume
8.20
Compatible motorbikes
YAMAHA6 compatible models
YZ 85 (CB04) - 2002/2003YZ 85 (CB09) - 2005/2012YZ 85 LW BIG WHEELS 19/16 (CB05) - 2002/2003YZ 85 (CB07) - 2004/2004YZ 85 LW BIG WHEELS 19/16 (CB10) - 2005/2018YZ 85 LW BIG WHEELS 19/16 (CB08) - 2004/2004