The JR-M705-RD rear arm kit is intended for the TAMIYA M-07 chassis and is machined from aluminum with a red anodized surface. These arms serve as a stiffer replacement for stock plastic arms, aimed at improving rear suspension consistency for model-car use.
Functionally the aluminium arms limit rear flex which can affect toe and camber under load, helping maintain setup through aggressive cornering and higher speed runs. Fit them when aiming for a firmer rear response during tuning or track use on M-07 platform vehicles.
Installation follows conventional M-07 maintenance: remove the original rear arms, attach JR-M705-RD at the chassis' existing mounts, inspect bearings and linkage hardware for wear, and confirm free travel after installation. Avoid over-tightening screws to prevent binding.