Traxxas Hoss/Rustler/Slash 4x4 Extreme Heavy Duty Caster Blocks. These caster blocks are intended for the Traxxas Hoss 4x4, Rustler 4x4 or Slash 4x4 when equipped with the optional Traxxas Heavy Duty Upgrade Kit (TRA9080). Package includes two caster blocks, two hinge pins and hardware.

NOTE: These caster blocks are designed to be used with the TRA9080 upgrade kit only. They will not fit the factory suspension parts found on your model.