Kyosho LA375-76 Spur Gear 48P-76T ZX6.6 spur gear  [KY-LA375-76]

Spur gear overview

This Kyosho LA375-76 spur gear is an RC-scale replacement part defined by its 48P pitch and 76T tooth count, intended for use where ZX6.6 appears in the product identification. It is presented as a component for drivetrain assemblies, clarifying its role in gear mesh, torque transfer, and gear ratio changes rather than as a standalone performance upgrade.

Compatibility is determined by the part designation, so confirm ZX6.6 references on your gearbox or parts list before fitting. The gear should be inspected for concentricity and tooth condition prior to installation and paired with matching pitch pinion gears to avoid premature wear.

Installation notes: remove the transmission cover, verify pinion and spur pitch match (48P), ensure correct mesh by adjusting motor mount or pinion spacing, and secure with the original retaining hardware. Run-in should be done at low throttle to validate smooth engagement and to check for binding or irregular noise.

Tuning role: this spur gear alters the effective gear ratio through its 76T tooth count; use it when the goal is to increase wheel torque at the expense of top speed, or when matching a desired ratio for track conditions. Adjust slipper clutch or differential settings after changing spur size to maintain predictable handling and drivetrain reliability.

Keep spare gears on hand and replace any gear showing chipped teeth or uneven wear to maintain consistent gear mesh and avoid secondary damage to pinion gears or bearings.