This set of aluminium wheel hex adapters provides a 27mm overall width to widen your track and deliver better lateral stability on scale crawlers and trail rigs. They are made to be compatible with AXIAL Racing SCX10 II and let you increase wheel spacing without swapping hubs or changing axle geometry.
Each hex accepts wheels with a 5mm centre hole and fits a 4mm threaded wheel shaft, so confirm those dimensions for compatibility. The internal Delrin collar positions the hex and reduces axial play, helping to keep the tyre seated firmly under high traction loads typical in crawling.
Securing hardware is arranged to lock the hex: one side uses an O-ring to preload the assembly, the other side uses a spring-steel retaining ring, a spring with washers, and a stainless screw to clamp everything together. This configuration allows you to adjust retention so wheels stay snug without binding bearing surfaces.
Use these adapters to widen stance for improved cornering and stability on rocky or technical trails, and to limit unwanted wheel rotation when traction is lost on one side. Installation is straightforward for hobbyists using standard hex drivers and common hand tools.
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