Caster block screw upgrade set (X5 Squared, Losi XX4 or Losi XXX4)TRIAD EVO slipper clutch - alloy drive plates - 3 pcs (TLR 22, AE B5, B44.2, Durango DEX210, Kyosho RB6 etc)
Revolution - high performance bearing kit (X-Factory X6-Squared or X6-Cubed)
Description