(Used) 2011 Western Star 4900EX, TANDEM CUTTOFF- Make: Meritor/Rockwell, Model: RR20145NFN1041, Ratio: 3.73, Serial Number: AVA96094240, Custom Number: S11-15714373, Hub Bolts: 10, Brake Type: Disk, For more information about this item, give us a call. We ship Worldwide! (CRG HEAVY TRUCK PARTS) 929 W PULASKI HWY, ELKTON, MD 21921