Replace a worn or damaged Diff Case on your HPI Hellfire RTR and get it ready for fun again with the stock Diff Case from HPI FEATURES: Nylon construction, black in color INCLUDES: One diff case REQUIRES: Installation following the model manual SPECS: Length: 1.05" (26.7mm) Diameter: 1.22" (31mm) COMMENTS: For the remaining diff gear parts order the following part numbers: HPIC2529 - Diff Shafts (outdrives) HPIC2085 - 8x16mm Bearings HPIC1721 - 4x4mm Set Screw HPIC6811 - O-Ring HPIC2260 - 2.5x12mm Pin HPIC2621 - Bevel Gear Set HPIC7194 - Bevel Gear Shafts HPIC6099 - Diff Case Washer HPIC2532 - 42 Tooth Large Drive Bevel HPIC3285 - 3x15mm Flat Head Screws kpm02/21/2006 ir/jxs