LAZER ZX Series 48P Spur Gear 80T - Kyosho LA427-80  [KY-LA427-80]

Replacement spur for LAZER ZX installations

Designed for LAZER ZX series models, the Kyosho LA427-80 is a 48P, 80-tooth spur gear with a ZX7.5 designation that functions as a direct replacement in scale RC drivetrains. It transmits torque from the motor pinion to the gearbox output and is intended for hobby use within LAZER ZX-compatible setups rather than use in actual vehicles.

Install this part when a spur shows wear or when you need to change gearing for different track or surface conditions. The 48P 80T spec dictates compatibility with 48-pitch pinions, so confirm pinion pitch and tooth count before you fit the gear. During fitting, set proper backlash across the gear face, verify bearing and shaft alignment, and rotate the drivetrain by hand to check for smooth engagement before applying power.

Changing to an 80-tooth spur shifts the final drive ratio toward smoother acceleration and typically reduced top speed versus smaller spurs, depending on the pinion chosen and motor/ESC setup. Treat spur swaps as part of a measured gearing strategy rather than a single cure-all, and inspect the gear for burrs or damaged teeth when replacing.

As a scale spare, the LA427-80 provides straightforward replacement and a clear tuning option for LAZER ZX owners seeking reliable drivetrain performance.