This is the Carrier Differential for the Traxxas Revo and E-Maxx.FEATURES: Replaces worn diff carriers gaskets and spacersINCLUDES: Diff Carrier and Gaskets, TRAC5381 Steel Spider Gear Braces (not used with Revo) Instruction sheetREQUIRES: Disassembly of differential, installing new parts and refilling with modeler"s choice of diff lube 10K (TRAC5135) 50K (TRAC5137) 30K (TRAC5136) stock weight Complete set (TRAC9136) jxs 3/04/07 ir/jxs