VHM HEADSET SX85 & TC85 2018

This cylinder head will only fit the SX and TC85 2018 model. The insert for the standard piston is a good upgrade but if you want a big power gain you will be looking to run the VHM piston flat with 12 degree angle which gives a good mid top rpm boost.

Dyno results

VHM parts vs standard bike
Blue line = VHM head + insert + VHM 12 degree piston + HGS exhaust
Red line = Standard

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