Hot Racing ATF18MX01 Heavy Duty Motor Mount Arrma 1:10 4x4 3s 4S BlxHot Racing aluminum adjustable motor mount with Heavy Duty Brace for 1 10 Arrma 4X4 3S, 4S BLX brushless vehicles. FEATURES: Adjustable slider design replaces fixed gear settings on stock mount to allow wider selection of gear ratios Allows for fine tuning of gear mesh Heavy Duty brace from the chassis to the motor mount If using stock 57T 32P(Mod 0. 8) spur gear, allows pinion gears from 9T to 27TYOU WILL RECEIVE: One (1) aluminum motor mount