just take out one of the 3 small gears and shove it in between the other two gears. itll lock it and is easily reversible.
Team Ghost Drift
MST FS-01D cs@2.0
Yokomo DRB cs@1.8
Eagle  R31 RWD
MST FS-01D cs@2.0
Yokomo DRB cs@1.8
Eagle  R31 RWD