With these replacement/optional differential o-rings, you can improve the consistency and predictability of your 2.0 Buggy or Truggy! TKR5144B differential o-rings were used during development to boost stability when landing jumps or in right-handythm sections, as well as give more acceleration and consistency during long runs or bash sessions. They achieve many of the same benefits as the new differential shims (TKR5144) by moving some of the resistance work from the oil to the o-rings and allowing the use of lighter differential oil.
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TKR5144B is a direct replacement/option for TKR5144 and is compatible with all other new differential parts (TKR9115B, TKR9145 and TKR9150B) and existing 2.0 differential parts (TKR5112X, TKR5114XB, TKR9115, TKR5144, TKR5145B, TKR9112, TKR9114, TKR9115, TKR9149, TKR9149A, and TKR9150). They are also compatible with the EB/ET410 line of vehicles and are recommended to be used on all track surfaces.