LAZER ZX Series Spur Gear 80T (48P) Compatible Replacement - Kyosho LA427-80  [KY-LA427-80]

Spur gear compatibility for LAZER ZX

The Kyosho LA427-80 is a 48P, 80-tooth spur gear intended for LAZER ZX series kits, identified with a ZX7.5 marking. It functions as a scale RC drivetrain component that transfers power from the motor pinion to the gearbox output and is sold for hobby use in LAZER ZX-compatible assemblies rather than for any road vehicle application.

This item is fitted when a spur is worn or when adjusting final drive ratios for different track or surface needs. The 48P 80T specification requires a matching 48-pitch pinion to ensure correct meshing; verify pinion pitch and tooth count before installation. When fitting the gear, set appropriate backlash, inspect gearbox bearings and shaft alignment, and manually turn the drivetrain to check for smooth engagement prior to powering up.

Swapping to an 80-tooth spur modifies the final drive ratio, typically delivering smoother acceleration but a lower theoretical top speed compared with smaller spurs, subject to pinion selection and motor/ESC setup. Use this part as one element in a broader gearing and tuning plan, and always check for damaged or burrred teeth during replacement.

As a scale spare, the LA427-80 gives LAZER ZX owners clear replacement capability and a dependable option for ratio adjustments and drivetrain reliability.