ZX6.6 Compatible Spur Gear 76T 48P for Tuning - Kyosho LA375-76  [KY-LA375-76]

Details on the spur gear

The Kyosho LA375-76 spur gear is an RC replacement component defined by its 48P pitch and 76T tooth count, intended for assemblies marked ZX6.6. It is presented as a drivetrain part that impacts gear mesh and final drive ratio rather than as a full performance kit.

Use the part designation to confirm compatibility and ensure your gearbox or parts list indicates ZX6.6 before fitting. Check the gear for tooth condition and concentricity, and match it with a 48P pinion to avoid mismatched wear.

Fitting advice: remove the transmission cover, confirm pinion/spur pitch alignment (48P), adjust motor mount or pinion spacing to set proper mesh, then replace the original retaining hardware. Conduct a cautious run-in at low throttle to verify smooth engagement and to listen for irregular noises.

Tuning impact: installing the 76T spur reduces top speed while increasing wheel torque, useful when targeting specific performance trade-offs. After changing the spur, re-evaluate slipper clutch and differential settings to retain predictable handling and protect the drivetrain.

Carry spare gears and replace any showing signs of chipped or uneven teeth to preserve gear mesh and prevent damage to pinion gears and bearings.