Each brass wheel weight adds 31 grams to the lowest part of your TRX-4M™ for improved anti-rollover stability and superior rock-climbing capability.

Replacement ring and pinion gears from the front and rear axles

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.

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.

Designed for all-around action, the high-range gear set is a direct replacement for stock TRX-4M™ transmission gears. The package includes a full set of transmission gears and an 11-tooth pinion gear with a total 16.6:1 reduction ratio.

Shocks, GTM, 6061-T6 aluminum (blue-anodized) (fully assembled w/o springs) (4)

Take your TRX-4M™ to the next level by replacing the standard suspension links with these heavy-duty steel links.