This accessory set fits Traxxas 1/18 TRX4M Bronco and TRX-4M Defender models and is finished black over brass to enhance scale looks. The covers attach externally to the axle housings and add axle-end mass for altered appearance and handling feel on compatible TRX4M chassis.
Manufactured from brass with a black surface finish, the parts are intended as cosmetic/weight accessories that mount to existing axle cover points on the specified Traxxas models. They do not require internal axle modifications and should be test-fit prior to permanent installation.
The brass construction increases axle-end mass relative to lighter materials, which can affect low-speed traction and vehicle attitude on technical terrain; the finish prioritises scale appearance and may show wear with trail use.