Hot Racing aluminum center differential case for the Traxxas Rally VXL, Slash 4X4, Stampede 4X4, and Telluride 4X4 vehicles. FEATURES:- CNC 6061-T6 aluminum construction, hard anodized- Direct fit hop up requires no model modification for useYOU WILL RECEIVE:- One (1) aluminum center diff case (two case halves)- HardwareREQUIREMENTS:- Installation- Stock gear differential with internal and external gear componentsCOMMENTS:- This will only work with center gear differential only (not with the slipper system)- Replaces Traxxas 6884 center gear differential case halves