These Mule models are more compact but just as dedicated to the job. Simplicity reduces maintenance and budget. The 617 cc and 401 cc engines are sufficient to carry good loads, 400 lbs for the SX. This compact model can be recognized by its rounded posts. With its 52.5″ wheel width, the SX’s tight turning radius makes it easy to get anywhere. Its light weight and small size allow it to be transported in the bed of a pickup truck.