TAMIYA Hotshot, Hotshot II/2, Boomerang 4WD front lower suspension arms by JAZRIDER JR-THS06-GU  [JR-THS06-GU]

Front lower suspension arms

This JR-THS06-GU aluminium front lower suspension arm set is an RC-scale replacement part manufactured by JAZRIDER for TAMIYA Hotshot, Hotshot II/2 and Boomerang 4WD chassis. The component replaces the factory plastic arms with an aluminium unit to provide a firmer mounting point in the front suspension, maintaining correct geometry while resisting wear that occurs in repeated running.

Compatibility is limited to the listed TAMIYA chassis; this part is intended for model-scale use only. When fitting, perform a trial assembly to confirm ball stud and hinge-pin alignment, inspect existing ball bearings and pins for wear, and verify there is no binding through the full suspension travel. Minor trimming of paint or flash on mating surfaces can help achieve a clean fit.

In tuning terms, aluminium lower arms reduce flex compared with stock plastic, which can produce crisper steering response and a more consistent camber behaviour during cornering. That also means other suspension settings may need a small adjustment to re-balance handling, for example roll center or anti-squat tweaks using existing linkage points.

For hobbyists replacing worn plastic arms or seeking a firmer front end for refined handling, these aluminium arms offer a direct swap option that supports incremental suspension tuning while keeping the original chassis geometry.