The GPM SLA1337FR differential set is engineered for TRAXXAS 1/10 SLASH 4X4 installations, featuring a CNC machined 7075-T6 aluminium case and medium carbon steel inner and outer gears for superior wear resistance. The spiral cut gearing improves gear engagement under load and simplifies assembly for tune and service intervals. This component is aimed at hobbyists seeking a robust, precision upgrade for competitive or aggressive backyard use. Note: Differential oil is not included and must be added separately.