Tamiya has released 18T Pinion Gear For 540 motor : 58346/ 84416/ 84331/ 57746 Grasshopper under Pinion Gears category Tamiya made 18T Pinion Gear For 540 engine : 58346/ 84416/ 84331/ 57746 Grasshopper (9805997) Pinion Gears 18T Pinion Gear Set for: 84416 RC Grasshopper Ebony Edition 84331 RC The Grasshopper Kit - Candy Green Edition 58346 RC Grasshopper - 1/10 Re-Release 57746 RC RTR The Grasshopper