This GPM medium carbon steel differential gear set is specified for Traxxas XRT 8S applications and is compatible with X-MAXX models listed below. The kit includes a 32T bevel gear and both front and rear 10T pinions to provide consistent torque distribution across the axle. Use in conjunction with GPM gearbox covers XRT012 and TXM012A to improve casing stiffness and reduce unwanted movement in the drivetrain.