Kyosho LA402-01 Diff. Gear Case Set for LAZER ZX7.5  [KY-LA402-01]

Diff gear case for ZX7.5

This LA402-01 Diff. Gear Case Set is a scale RC replacement housing intended for use on the LAZER ZX7.5 differential assembly. It serves as the outer case that locates internal bevel gears and supports bearings, providing a direct swap for the matching ZX7.5 diff components.

Fitment is limited to the LAZER ZX7.5 as stated; confirm chassis and gearbox layout before installation. Installation requires disassembling the gearbox to access the differential, transferring internal gears and bearings into the new case, and verifying clearances during reassembly. Basic tools such as a set of hex drivers are typically sufficient, and careful attention to bearing orientation and gear mesh will reduce premature wear.

From a setup perspective the case itself defines gearbox geometry and does not change internal gear ratios, but it can affect how the diff is serviced and tuned: keeping fasteners torqued evenly and bearings clean helps maintain predictable differential behaviour. Inspect mating surfaces and fasteners when replacing the case, and run a controlled test after reassembly to confirm smooth operation.