The Tamiya 42307 upper arm spacers let racers trim suspension geometry on the TRF419X chassis. Supplied in 0.5mm and 0.8mm plates, they change the upper turnbuckle length so you can tune camber response for different grip levels.
Using spacers alters upper arm length to match cornering needs. A longer effective arm lowers camber gain for a steadier platform, while a shorter arm increases camber gain for improved bite. Experiment with both sizes to match tyre compound and surface conditions.
Specifically designed for the TRF419X, these spacers offer a secure fit compared with standard round types. They work together with BA23 kit pieces from the TRF419X to create a tailored setup without cutting or filing parts.
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