INJORA Complete Metal Gearbox Transmission Box with Gear for Axial SCX10

INJORA Complete Metal SCX10 Gearbox Transmission Box with Gear for 1/10 RC Crawler Axial SCX10 Suit for: 1/10 RC Crawler Axial SCX10 Compatible with INJORA 540 and 550 motors Features: Easy to install and durable Made of high quality material Smooth and excellent Running Protective cover design, prevent sand and dust Specifications: Material: Metal Quantity: 1pcs Weight: 205g Color: Titanium & Red, Titanium & Orange Motor Gear: 20T (for 3.17mm shaft motor) 20T 0.5M Steel Pinion87T 48P Spur GearGear ratio Pinion / Spur ratio = 4.35:1Wide Steel 48 Pitch Internal GearsInternal Gear Ratio = 2.6:1Final Gear Ratio = 11.31:1 Package List: 1 * SCX10 Gearbox with Gear