Got this just incase I need to drop a tooth on the pinion for my IL Goblin 520 since I am using the Xnova 4020 900kv from my old Raw 500. I swapped out the motor shaft and installed the motor on the heli with the stock 17T pinion. It will most likely crank out some serious head speed. Just incase it’s too much and I am losing efficiency with the ESC and Motor due to lower throttle percentages l, I have this in hand to swap in. Greta quality as usual from SAB.