Replace worn or damaged Diff Bevel Gear Shafts on your HPI Hellfire RTR and get it ready for fun again with the stock 4 Bevel Gear Diff Shaft from HPI. FEATURES: Steel construction, black in color Slots cut out in each shaft so they can key together INCLUDES: Four Shafts (enough for two differentials) REQUIRES: Installation following the model manual SPECS: Length: 1.06" (27mm) Diameter: .16" (4mm) 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 HPIC5500 - Diff Case HPIC6099 - Diff Case Washer HPIC2532 - 42 Tooth Large Drive Bevel HPIC3285 - 3x15mm Flat Head Screws kpm02/21/2006 ir/jxs