HIGH-PERFORMANCE COMPONENTS The Arrma ARAAR310802 Differential Case/Main Gear Set is meticulously engineered for the Granite Mega 4x4 Monster Truck and Senton Mega 4x4 Short Course Truck. DURABLE CONSTRUCTION This gear set features composite plastic construction, including a robust 49-tooth main gear and a 17-tooth input gear. INTEGRATED DESIGN The ring gear is integrated with the differential case, housing a planetary gear and differential outdrive assembly for enhanced functionality. COMPREHENSIVE INCLUSIONS Included in the set are a ring gear with integrated differential case, a differential case cap, and an input gear, providing everything you need for a complete assembly. Experience the precision of Arrma engineering with this essential set designed specifically for the Granite Mega 4x4 and Senton Mega 4x4 models, ensuring optimal performance on your next adventure.