This gear set provides a replacement internal differential bevel and matching pinion for TRX4-style trail crawlers. The package contains a 34T differential bevel and an 11T pinion, both produced in 40CR steel for scale drivetrain applications only.
Installed inside the inner area of the front or rear gearbox, the bevel gear set passes torque from the drive output to the axle shafts. These aftermarket components are intended to re-establish correct tooth engagement and steady power delivery while crawling.
Fitting tips: confirm gear mesh and any backlash against your existing spur and pinion before locking the gearbox, remove any trapped grit or old grease, and lubricate the gear surfaces with a dedicated RC gear grease to keep operation smooth.
8279?8279R
When internal diff teeth show wear, replace them with this 40CR bevel and pinion set to regain consistent crawling performance in TRX4 and compatible TRX-6 gearboxes.
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