This adapter set is made for the AXIAL RR10 Bomber platform to widen wheel track by 25mm and improve roll resistance on technical crawler lines. The hexes suit wheels with a 5mm central hole and are intended for fitting to 4mm threaded wheel shafts, so you can alter track without changing hub parts.
Each adapter assembly features a Delrin locating collar to centre the hex, an O-ring for light preload on one face, and a spring steel retaining ring with spring and washers plus a stainless screw to hold everything secure. Those securing elements minimise wheel slip under heavy load and keep the assembly serviceable for checks and adjustment.
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