Produced on Stewart & Stevenson’s Houston manufacturing flow line, Rail King is engineered to provide the Best Value in the industry. Available in several reliable, efficient and cost-effective models, Rail King provides maximum tractive effort up to 33,000 pounds for single-coupled versions, and up to 49,000 pounds for double-coupled versions.

Rail King features side-mount or full-width cabs with dual direction controls, both road wheels and rail wheels for quick, easy mobility on tracks and roadways, the patented cushion coupler system, and an enclosed, insulated cab with 360-degree visibility for operator safety and efficiency. All models feature a three-point Royalglide suspension system.

Model Weight (lbs.) Tractive Effort (lbs., single coupled) Cab Style Engine (Cummins QSB) Controls
RK290 G4 39,500 29,100 Side Mount Tier 3 – 173 hp Analog
RK290 G5 39,500 29,100 Side Mount Tier 4i – 173 hp Digital


  • Many factory options available to fit any application, including remote control
  • More standard features on all new model Rail King rail car movers
  • Systems designed for ease of service, resulting in less downtime and reduced maintenance costs
  • Both road wheels and rail wheels for quick and easy mobility on tracks and roadways
  • Common Sense Engineering - maximum efficiency with safety and operator comfort
  • Exceptional performance - typically outperforms competitive models of same class size
  • Royalglide suspension system
  • Insulated cabs with wide entry doors, more head and leg room, easy-to-use controls and 360-degree visibility
  • Patented cushioned coupler system, full floating frame and cab design that provides a smooth ride on rail

  • Controls: Analog or Digital
  • Weight: 39,500 lbs
  • Cab Style: Side Mount
  • Engine (Cummins QSB): Tier 3 - 173 hp or Tier 4i - 173 hp
  • Tractive Effort: 29,100 lbs
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