The Latest developed differential,which is to be widely used in China 4 speed ratio transmission gearbox with differentail and installed on rear axle engine is from 250cc-- 1100cc. Differential is used on shell style tricycle axle,with 3 forward speed and 1 reverse speedForward Ratio:10:31,15:35,4.66:31, Reverse ratio:4.56:31 Output side Spline teeth No. 19,22,32 Below picture are the ...