(Used) 2015 Freightliner M2 106, REAR REAR- Make: Detroit Axle, Model: DA-RS-21.0-4, Ratio: 5.22, Hub Bolts: 10, Brake Type: Air Wedge, Suspension: Air Liner, For more information about this item, give us a call. We ship Worldwide! (CRG HEAVY TRUCK PARTS) 929 W PULASKI HWY ELKTON, MD 21921