This is the Stock Replacement Differential Housing for the Traxxas Electric and Nitro 4-Tec Touring Cars. FEATURES: Black nylon construction INCLUDES: One front diff cover and housing One front shock tower REQUIRES: Installation onto vehicle. SPECS: Length of diff cover: 55mm (2.18") Length of shock tower: 52mm (2.06") cmc 08/04/02 ir/kh