This bearing kit replaces worn out or damaged bearings from the RPM Axle Carrier set for the Traxxas Revo & T-Maxx - 2.5R/3.3 & E-Maxx 16.8 (part numbers 80581, 80582, & 80585). This kit comes with 2 - 21mm inner bearings and 2 - 15mm outer bearings, enough bearings to do two axle carriers. Two kits are required for one complete truck.
Tech Note: This bearing kit will only work with RPM axle carriers for the Traxxas Revo & T-Maxx 2.5R/3.3 & E-Maxx 16.8. It will not work with stock Traxxas Revo axle carriers.