AXIAL AX31181 Yeti Transmission 2 Speed Hi/Lo Components FEATURES: First gear is a 2:1 reduction intended for slow crawls High gear option (26T) increases top speed with a 0.93:1 ratio Heat treated hardened INCLUDES: 18T, 28T, 26T, 36T and Slider Gear Full set of Transmission Cartridge Bearings Servo Saver System, w/two Servo Horns, and three Spline Adapt REQUIRES: 3-channel radio Servo with at least 80oz/in of torque