For RC hobbyists wanting finer control of their Mini-Z 4x4 crawler, the Kyosho MXW004 brass rear axle cap is a compact upgrade. It shifts mass rearward to help improve stability and steering predictability when descending.
The brass cap adds measurable rear mass that lowers the centre of gravity and helps the rear wheels keep traction on steep slopes. Drivers running technical downhill lines will often notice a steadier rear end and reduced tendency to flip.
Made for the Mini-Z 4x4 series, the Kyosho MXW004 fits cleanly and installs with minimal tools thanks to its precision machining. That makes it a straightforward option for tuners who want a handling improvement without major chassis changes.
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