This RC-scale upgrade supplies front and rear upper arms intended for the TAMIYA Thunder Shot, Thunder Dragon and Fire Dragon chassis, shipped as two black pieces. The parts are aluminum units designed to be direct-fit replacements using the original mounting points.
Fitting notes: the arms are meant to replace standard plastic arms on compatible Thunder series buggies and typically mount to the same hinge locations with existing hardware. No special tooling is called out; verify fit and clearances before final tightening.
Setup considerations: aluminium arms increase structural stiffness versus plastic originals, which alters suspension compliance and how forces transfer through the chassis. Use them to reduce arm deflection and stabilise suspension response, then adjust damper and alignment settings to suit.
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