Traxxas Revo 39T Delrin Spur Gear RE-031 Workshop Replacement by 3Racing  [RE-031]

39T Delrin spur for Revo maintenance

The 39-tooth Delrin spur is a direct-fit replacement for the Traxxas Revo spur position, optimised for quieter engagement and consistent tooth contact. The acetal material gives improved abrasion resistance against everyday wear when compared with softer plastics.

To fit, locate the spur on the gearbox output and set mesh with the pinion prior to securing; tiny shim changes or slight motor repositioning will often cure backlash and prevent uneven loading. Inspect for runout and re-check after an initial running session to ensure proper seating.

For tuning use the RE-031 as a dependable maintenance or ratio-swap option rather than a raw performance part: replace it when chatter or worn teeth appear, and keep lubrication and bearing condition under observation to avoid undue wear on mating metal components.