LAZER ZX7.5 Differential Gear Case - Kyosho LA402-01  [KY-LA402-01]

Replacement differential housing for ZX7.5

This LA402-01 Diff. Gear Case Set is a scale RC replacement housing built for the LAZER ZX7.5 differential assembly. The part locates the internal bevel gears and supports bearings, providing a like-for-like swap with the matching ZX7.5 diff components.

Fitment is restricted to the LAZER ZX7.5 layout; confirm your chassis and gearbox arrangement before ordering. Installation involves removing the gearbox to access the differential, moving the internal gears and bearings into the new case, and checking clearances on reassembly. A basic hex driver set is normally sufficient, and careful attention to bearing orientation and gear mesh will reduce the chance of premature wear.

Functionally the case sets gearbox geometry and does not change internal gear ratios, but it affects serviceability and the ease of tuning the diff: keeping bolts evenly torqued and bearings free of debris helps keep differential action predictable. Inspect mating surfaces and fasteners when replacing the housing, then perform a low-speed test run after reassembly to confirm smooth operation.