The Tamiya 15250 SuperX Small-Diam. Wheel Lock-Nut Set is a must-have for Mini 4WD fans looking to improve wheel retention and stability. These lock nuts are made to fit the SuperX chassis precisely, giving racers and collectors confidence that wheels stay mounted during high-speed laps and regular running.
Built from durable materials, the lock nuts clamp tightly to prevent loosening under load. The small-diameter profile reduces rotational inertia, helping with snappier acceleration and a cleaner top speed, while remaining a practical upgrade for track tuning and long term reliability.
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