This aluminum rear knuckle arm set is an RC-scale replacement designed specifically for TAMIYA Hotshot and Super Hotshot chassis. It is meant to provide a firmer mounting point than standard plastic units and to act as a straightforward upgrade for suspension geometry tuning.
Compatibility is confined to the Hotshot and Super Hotshot families as noted; verify your chassis layout prior to installation. The arms match the original mounting locations so you can reuse existing screws and linkage where they fit correctly. No claim is made about included fasteners.
Installation pointers: remove the rear hub carriers and stock knuckle arms, install the aluminum arms to the uprights and secure using your chassis' existing screws and ball studs if compatible. Tighten to appropriate small RC torque settings to prevent thread damage. After fitting, confirm wheel alignment and full suspension travel before operating.
Tuning perspective: switching to aluminum knuckles gives a stable pivot for fine-tuning toe and camber, making it simpler to assess the effects of setup changes across test runs. Use these parts as part of a coordinated setup change rather than expecting a single-piece cure.
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