Tamiya 53975 - TRF501X Rear Spring Set Track-Tuning  [53975]

Fine-Tune Rear Handling on the TRF501X

The Tamiya 53975 - TRF501X rear suspension spring set supplies three pairs of colour-coded springs - Hard, Medium and Soft - so you can adjust rear stiffness to suit varying circuits. These springs let you change rear response between high-speed stability and added grip without swapping other parts.

Colour Markings for Fast Setup Changes

Each spring pair is marked by colour for quick identification during practice sessions. Hard springs stiffen the rear for straighter runs, medium springs balance stability and turn-in, and soft springs improve traction on low-grip surfaces.

Engineered to Match TRF501X Geometry

Produced to fit the TRF501X suspension layout, the springs install cleanly in standard shock assemblies and give consistent, repeatable feel. They are aimed at hobbyists and club racers who want reliable tuning options.