Give your TRX-4M™ unstoppable torque with this low-range transmission gear set. The gear set features an ultra-low 40.3:1 reduction ratio for maximum rock-climbing power. The set includes all transmission gears and a new 11-tooth motor pinion.

Boost the top end of your TRX-4M™ with this Speed gear set. The gear set features a high 9.7:1 reduction ratio for maximum speed. The set includes all transmission gears and a new 11-tooth motor pinion.

Replacement ring and pinion gears from the front and rear axles

Rear Hub Pins(4P) volcano 16