The Kyosho MZW304 Titanium Ball Differential Shaft is a precision upgrade for Mini-Z owners chasing cleaner acceleration and reduced rotating mass. It helps the MR-03 respond more directly to throttle and steering inputs.
Using titanium cuts weight while keeping strength, so the MZW304 reduces rotating inertia compared with stock components. Drivers will notice improved acceleration transitions and steadier handling under load.
Engineered for MR-02LM and MR-03LM chassis, the shaft offers a direct replacement that does not demand major chassis work. Fitting is straightforward for anyone familiar with standard RC maintenance routines.
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