Most stock UTV Drivelines do not come phased and 100% are not balanced. Don't let your driveline cause you anymore vibration and send us your stock driveline. We set up the driveline fully phased and balanced with DOM stronger shafts (double wall thickness) and is the only way to go to prevent vibration. Check out our Upgraded Carrier Bearings (separate item) this is a must have to improve the driveline angle and prevent future issues in your drivetrain.