Amazon.com: Raidenracing Upgrade Harden Steel 50T Main Spur Gear 1 Mod M1 for Traxxas X-MAXX XRT E-REVO 2.0 NEW MAXX XO-1-1 pc : Industrial & Scientific
43T Metal Spur Gear for Traxxas 1/16 E-Revo, Slash, Summit, Rally for R/C or RC - Team Integy
Not a big project but I fixed/upgraded my first part on the E-Revo! Replaced the spur gear with a metal one because I didn't want to shred a plastic one again. :
Hot Racing Steel Spur Gear 34T 1.0 Mod: Traxxas Revo 3.3, Slayer Pro | Horizon Hobby
Traxxas 0.8 Mod Spur Gear For E-Revo - 65T | EuroRC.com