Heavy-duty 11 tooth differential pinion gear for the Traxxas X-Maxx and XRT. The front and rear versions are different parts, so order the one for the differential you are rebuilding. It meshes with the 35 tooth ring gear TRX7792, which is sold separately and is usually replaced at the same time. On an 8S truck these gears carry the full motor torque and a worn set announces itself as a whine that turns into skipping under throttle.
