This RC-scale pair of wheel hex adapters provides a total width of 25mm to increase track width on AXIAL SCX10 II platforms while keeping the installation compact. Each adapter accepts wheels with a 5mm hub hole and is designed to work with a 4mm threaded wheel shaft, enabling reuse of wheels that match these dimensions.
Mechanical retention is achieved with a combination of seals and spring hardware: an O-ring on one side, and on the opposite side a spring steel retaining ring, spring with washers, and a stainless steel screw that compresses the assembly. A Delrin collar is fitted inside the hex to locate the wheel and prevent relative rotation between the adapter and wheel under torque typical of crawling and low-speed traction situations.
In setup and tuning the adapters act as a simple track-widening accessory: they change wheel stance for added lateral stability during slow-speed rock crawling and trail runs. Verify axle thread and wheel hub measurements before fitment, ensure the retaining screw and spring hardware are seated correctly, and confirm the Delrin collar locates the wheel concentrically to avoid imbalance.
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