Lazer ZX7.5 Replacement Spur Gear 48P/78T - Kyosho LA427-78  [KY-LA427-78]

Product Details and Fitment

The Kyosho LA427-78 spur is a 48 pitch, 78-tooth component intended as a replacement for Lazer ZX7.5 on-road models. It serves as the principal large gear in the vehicle’s geartrain and is offered as an aftermarket spare part.

This part is strictly a mechanical element, influencing final gear ratio and torque delivery when used with a selected pinion. Installation uses the ZX7.5 spur shaft and original mounting hardware, so verify spacing and shaft diameter on your car before fitting.

Practical installation notes: set a consistent minimal backlash at the pinion, confirm the gear runs true without axial play, and apply a light, appropriate grease to the gear faces if your maintenance procedure requires it. Always rotate the drivetrain by hand after assembly to check for smooth engagement before operation.

Ideal for racers and hobbyists who want to replace or adjust gearing on Lazer ZX7.5 based RC cars, this spare enables straightforward tuning of acceleration and top speed balance.