7075 Aluminum Center Shaft for LAZER ZX Series - Kyosho LAW77B  [KY-LAW77B]

7075 aluminum centre shaft for LAZER ZX driveline

The Kyosho LAW77B 7075 aluminum center shaft is a direct spare for LAZER ZX series models identified by the 71.5/7075/ZX7.5 code. As a model-scale driveline part, it replaces the original center shaft to restore alignment and rotational stability inside the transmission assembly.

Produced from 7075-grade aluminum as noted in the designation, the shaft gives a rigid connection between gearbox elements while remaining a like-for-like replacement. Install when shaft wear, bend, or bearing play start to degrade drivetrain smoothness to avoid replacing the entire gearbox.

Correct installation requires proper seating and sound bearings. During fitment, check mating surfaces and running clearances, inspect adjacent ball bearings and spur/pinion engagement, and make sure the shaft spins freely before final reassembly. Small adjustments to gear mesh and dynamic balance can reduce vibration and sharpen handling during tuning sessions.

A practical maintenance and tuning spare for LAZER ZX series cars, offering a 7075 aluminum alternative for hobbyists seeking durability.