This aluminum rear knuckle arm set is an RC-scale replacement part built for TAMIYA Hotshot and Super Hotshot chassis. It offers a firmer mounting point than standard plastic arms and serves as a simple upgrade when you are adjusting rear suspension geometry for handling tests and track setups.
Compatibility is restricted to the Hotshot and Super Hotshot families as noted, so confirm your chassis layout before fitting. The items share the original mounting positions, allowing reuse of existing hardware and linkages where appropriate. Do not assume new fasteners are supplied.
Installation notes: remove the rear hub carriers and stock knuckle arms, position the aluminum arms on the upright and secure with your chassis' existing screws and ball studs. Tighten to a torque suitable for small RC hardware to avoid thread damage. After assembly, check wheel alignment and suspension articulation through full travel before running.
Tuning role: swapping the stock rear knuckles for aluminum parts provides a stable pivot for toe and camber tweaks, making it easier to compare setup changes across test laps. Use these arms alongside shock, roll-center, and anti-squat adjustments for coherent handling development.
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