The Western Star 4900 SA with set-back axle is available in 123- and 109-in. Bumper to Back of Cab (BBC) versions.
- Choice of three engine rated up to 625 hp
- Standard Supervisibility fiberglass hood
- Standard frame is 5/16" x 3 1/2" x 10 5/8" with 120-KSI steel
- Eaton Fuller or Allison automatic transmission