TRAXXAS Unlimited Desert Racer 139mm Rear L-shape Aluminum Spring Damper by GPM UDR139R/L  [UDR139R/L]

139mm Rear L-shape Aluminum Damper

This RC-scale rear L-shape spring damper set is designed for the TRAXXAS UNLIMITED DESERT RACER platform and intended as an aftermarket hop-up for improved suspension control. The kit includes two matched dampers that reduce friction and absorb impacts during off-road driving, helping the model maintain balance over rough surfaces.

Key hardware changes compared with typical stock units are focused on durability and fluid control: the coil spring wire is increased to 2.0mm for firmer response while remaining compatible with original springs if a softer setup is preferred, and the damper shaft diameter is increased to 5.0mm to resist bending under heavy loads. The aluminum damper cylinder and tightly sealed spring retainer reduce leakage risk, and the L-shape piggy-back reservoir increases oil travel to smooth out damping through long strokes.

Installation notes: this is an RC-scale replacement for the rear suspension; basic disassembly of the rear shock mounts is required and standard shock tools such as a hex driver are used. It is suitable for hobbyists who tune spring rates and damping for handling or endurance rather than cosmetic upgrades.

For on-track tuning where controlled rear travel and improved oil flow are priorities, this aluminum L-shape damper set provides a straightforward upgrade path for TRAXXAS Unlimited Desert Racer owners seeking firmer springs and a sturdier shaft without changing shock geometry.