Dynamically balanced to reduce noise and vibration, lengthening its life and the time between re-servicing. All Balls Stealth Drive Prop Shafts include a carrier bearing to reduce cost, ease assembly and provide a complete ready-to-install driveline, out of the box. Phased pairs are balanced and phased as complete, two-piece assemblies. Designed with the same dimensions as O.E.M. drive shafts for guaranteed fitment. Greaseable U-joints allow maintenance of the drive shaft.