GPM Racing Hardened Steel #45 Motor Gear 18T for Traxxas 1/10 MAXX (TXMS018TS)

Precision 18T motor pinion for TRAXXAS MAXX

This #45 hardened steel motor gear is engineered as a direct replacement to interface with the motor output on TRAXXAS MAXX monster truck platforms. It is intended to transmit rotational torque to the drivetrain while maintaining accurate mesh between the motor pinion and mating gear under load conditions.

Installation procedure: position the pinion square to the motor shaft, set the recommended mesh clearance, and torque the set screw to secure axial position. The hardened steel material is specified to increase wear resistance compared with softer alloys, supporting consistent engagement during tuning cycles and sustained operation.

Service recommendations: inspect mating surfaces for contamination, ensure uniform tooth contact across the face width, and perform a controlled low-speed run to validate free rotation and absence of binding prior to full-power testing.

Packing includes

• Motor Gear – 1pcs
• 4×4 Set Screw – 1pcs

Original Name / Part No:

6491X

This item is compatible with

• TRAXXAS-1/10 MAXX MONSTER TRUCK-89076-4

What measurements should be verified before fitting?

Confirm motor shaft diameter, the 18-tooth specification, and clearance space within the gear mesh area to ensure correct installation and avoid interference.

Why choose hardened #45 steel for a pinion?

Hardened #45 steel provides enhanced surface hardness and wear resistance, which reduces deformation and maintains mesh accuracy under repeated loads and tuning adjustments.

Are there recommended checks after initial runs?

After first runs recheck set screw torque, inspect tooth contact for even wear, and listen for irregular noises; adjust mesh if any binding or misalignment is detected. Write Product Review Please sign in your account before you can write any review. Sign In Close

Made to order: GPM Racing parts are shipped to us from GPM’s factory, so please allow around 14 days for dispatch.