F101/102 Rear Coil Spring Upgrade for Tamiya 5005032 58174/118  [5005032]

F101/102 rear spring description

This rear coil spring is an RC-scale replacement part made for the rear suspension of compatible F1-style Tamiya chassis. The component bears the internal reference 58174/118 and is meant to alter rear response while leaving the shock body unchanged.

Install this spring to replace worn components or to refine rear-end behaviour for improved handling balance. Typical replacement steps include removing the rear shock, exchanging the coil, and reinstalling the original shock cap and retainer; only common RC hand tools are required in most cases. Confirm the fit with F101/102 Group C style mounting points before running the model.

When evaluating changes on track, test spring swaps with small, controlled adjustments to oil weight, preload, and mounting position to isolate effects on roll and traction. Maintain notes for each configuration to speed up future setup work.