4WD differential,front differential,with 2WD----4WD shift,client can select the 2wd or 4wd according to his requirement. rear driven differential,be applied on 4 wheel driven vehicle such as ATV,UTV,golf,jeep,Karting and electric vehicleengine is for 800cc.Ratio:33:9, 32:13, 31:10 Spline teeth No. 19,22,32Below picture are the installation of the rear differential. 4WD 800cc ATV front limited ...