TRAXXAS UNLIMITED DESERT RACER Rear Shock Upgrade 139mm UDR139R/L by GPM  [UDR139R/L]

139mm Rear L-shape Aluminium Shock Upgrade

This aftermarket rear L-shape spring damper set is built for the TRAXXAS UNLIMITED DESERT RACER to give improved control over rough terrain. The matched pair reduces internal friction and helps the chassis remain composed over varied off-road surfaces.

Compared with stock units, the kit focuses on durability and stable fluid handling: the coil spring wire is beefed up to 2.0mm for a firmer response while still allowing original springs if a softer feel is wanted, and the damper shaft diameter increases to 5.0mm to better resist bending under heavy loads. The aluminium damper cylinder and sealed spring retainer reduce oil loss, and the L-shape piggy-back reservoir extends oil travel to smooth damping across long strokes.

Fitment advice: this is a rear suspension replacement that requires removing the original rear shocks. Standard tools such as hex drivers and shock pliers are adequate. The set suits hobbyists who adjust spring rates and damping for handling or endurance gains rather than cosmetic swaps.

When rear stability and smoother oil flow are required, this aluminium L-shape damper set offers a straight upgrade path for TRAXXAS Unlimited Desert Racer owners wanting a firmer, more robust shock.