3Racing Traxxas Revo 39T Delrin Spur Gear RE-031 - RC Spare Part  [RE-031]

Delrin 39T spur for Revo drivetrain

This 39-tooth Delrin spur is a direct replacement made for the Traxxas Revo drivetrain, intended for routine upkeep and quieter mesh. The acetal construction improves wear resistance and yields smoother tooth engagement compared with softer plastics, helping to reduce drivetrain noise during normal running.

Fitment is straightforward: position the spur on the gearbox output and check mesh with the pinion before tightening; minor shimming or small motor mount adjustments will reduce backlash and uneven wear. After the first run, recheck concentricity and bearing play to confirm there is no excess heat or binding.

For setup work the RE-031 is primarily a maintenance or replacement item rather than a power-adding upgrade: use it when teeth show wear or chatter, and monitor lubrication and bearing condition so the Delrin spur delivers steady engagement without accelerating wear on metal pinions.