3RACING 3RAC-PG6439 64 Pitch 39T Pinion Gear (7075 Hard Coated)  [3RAC-PG6439]

Precision 64 pitch pinion engineered for consistent mesh

The 3RACING 64 Pitch Pinion Gear 39T is engineered to deliver stable mesh characteristics in 64 pitch drivetrains. Manufactured from 7075 aluminium and treated with a hard coat, the unit aims to maintain tooth geometry under repeated load cycles.

Material and surface finish

7075 aluminium offers a high strength to weight ratio that reduces inertial load on the motor while providing structural integrity. The hard coat increases surface hardness to slow abrasive wear and preserve the gear profile.

Compatibility and application notes

Designed to industry 64 pitch dimensions, the 39T pinion provides accurate engagement with matching spur gears. Verify motor shaft diameter and set screw orientation to ensure correct fitment and secure retention in high RPM applications.

Performance considerations for racers

For competitive setups, maintain correct gear mesh clearance and monitor tooth condition after high stress sessions. The alloy and coating combination supports repeated high RPM operation while helping to reduce the rate of profile degradation.