This RC-scale pair of wheel hex adapters adds 25mm of overall track width to Axial SCX10 II rigs while keeping the installation compact. Each adapter is intended for wheels with a 5mm hub hole and designed to mate with a 4mm threaded wheel shaft so compatible wheels can be reused.
Retention is provided by a combination of sealing and spring hardware: an O-ring on one face, and on the opposite face a spring steel retaining ring, a compression spring with washers, and a stainless steel screw that clamps the assembly. A Delrin locating collar sits inside the hex to centre the wheel and resist relative rotation under crawling torque and slow-speed traction loads.
As a simple track-widening accessory the adapters change wheel stance to give extra lateral stability on technical trails and rock sections. Before fitting, double-check axle thread and wheel hub dimensions, confirm the spring, washers and retaining screw are installed correctly, and ensure the Delrin collar centers the wheel to prevent imbalance.
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