The GPM TRX4010/12MM 12mm aluminium wheel hex adapters are designed for accurate mating with the Traxxas TRX4 front CVD and rear drive shaft. By widening the wheel hex these adapters reduce coupling gaps and extend track, while the 12mm thickness provides a 7mm increase over the original component to enhance lateral stiffness. Manufactured for durability and consistent fit, the adapters are offered in assorted colours for assembly and visual preference.