This motor gear suits the TRAXXAS Unlimited Desert Racer drivetrain and is produced in hardened steel #45 to provide superior wear resistance when compared to typical stock gears.
Fitment area: pinion. The item is a 27T pinion offered as a direct replacement; the original is listed as 127T so you should position the motor mount in the corresponding hole to obtain correct gear engagement.
The product pack lists the motor gear and a 4x4 set screw, sufficient for standard pinion replacement and securing to the motor shaft.
Install this gear when you want a robust pinion for drivetrain tuning or tougher running conditions; inspect and set the gear mesh and motor mount alignment during installation to avoid undue wear on bearings and the spur gear.
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