LAZER ZX Compatible 80T 48P Spur Gear for Ratio Tuning - Kyosho LA427-80  [KY-LA427-80]

Tuning-focused spur for LAZER ZX cars

The Kyosho LA427-80 spur gear is specified for LAZER ZX series models and carries a 48P, 80-tooth configuration with the ZX7.5 identification. It transmits power from the motor pinion into the gearbox output and is designated for hobby-grade LAZER ZX-compatible assemblies rather than for real vehicle installations.

Mechanically, this part is used when replacing a worn spur or when changing gear ratios to tune vehicle response. Because the part is 48 pitch with 80 teeth, pairing with a matching 48P pinion is essential for correct mesh; verify pinion pitch and tooth count prior to installation. During fitting, adjust backlash to a minimal free setting, confirm shaft parallelism and bearing integrity, and rotate the drivetrain by hand to confirm smooth engagement before running.

From a tuning perspective, switching to an 80T spur alters the final drive ratio to typically increase acceleration smoothness while reducing peak speed compared to smaller spurs, depending on chosen pinion and motor specs. Use gear changes as part of coordinated tuning steps and always inspect for damaged or burr-marked teeth at swap intervals.

For LAZER ZX owners who tune gearing, the LA427-80 is a practical replacement that supports controlled ratio changes and reliable power transfer.