This replacement kit supplies the internal differential bevel and matching pinion used in TRX4-based trail crawlers. It contains a 34T bevel differential gear and an 11T pinion produced from 40CR steel for scale RC drivetrain use only.
The components sit in the inner front or rear gearbox where they transmit torque from the motor to each axle. These aftermarket gears are intended to restore correct tooth engagement and consistent power transfer for off-road crawling rigs.
Fitment advice: set the correct gear mesh and backlash using your existing spur and pinion before final assembly, remove any contaminants from inside the gearbox, and coat mating teeth with a suitable RC gear grease to reduce friction and wear.
8279?8279R
Fit this 40CR bevel and pinion set when diff teeth wear affects engagement, restoring dependable low-speed crawling response in TRX4 and compatible TRX-6 gearboxes.
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