Traxxas Ring Gear Diff Pinion Gear 12/47 Ratio Front TRA6778 This is the Traxxas Front Ring Gear, Differential, and Pinion Gear with a 12/47 Ratio for the Stampede 4x4.Features:Black colored Made of tough SteelFor the Traxxas Stampede 4x4Includes:One Traxxas Front Ring Gear, Differential, and Pinion Gear with a 12/47 Ratio for the Stampede 4x4