Model builders and racers seeking steadier handling from a TRF421 will benefit from the Tamiya 9803482 Upper Arm Mount A/B. It is intended to support accurate suspension geometry and give more consistent behaviour through corners.
Manufactured to suit the TRF421 chassis, the Tamiya 9803482 installs with common RC tools and aligns with OEM mounting points. Its robust support for the upper arms helps reduce flex and supports tighter cornering stability without extensive setup changes.
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