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Trailer SumoSprings are a maintenance-free suspension enhancement built to create a better journey by reducing G-force in your towable by 68%.  Handmade from micro-cellular polyurethane, they are designed to remove sway, hop, & body roll while increasing overall driver control and comfort while towing.


The TSS-106-40 is designed for trailer frames with a GAWR of 3,000-5,000 lbs with the spring sitting underneath the axle tube. The Blue SumoSprings shouldn’t be compressed past 70% of their original height in order to keep full memory rebound.


Trailer SumoSprings® utilize the same micro-cellular air springs as SumoSprings. They mount above trailer leaf spring assemblies and create a cushion between the axle and trailer frame. Trailer SumoSprings reduce wear and tear on body-frames, windows, doors, closets, mounted TV’s, and other components by minimizing bounce, hop, and sway associated with most tow-able RV’s. Reduced sway and bounce in the trailer results in increased driver control, ride comfort, reduced maintenance costs, and reduced overall cost of trailer ownership.


  • Sold as a pair (left and right)
  • Maintenance-free
  • Reduces and absorbs vibration
  • 500 (lb) Capacity at 50% Compression
  • Reduces overall cost of ownership
  • Improves overall driver control and ride comfort
  • Compress up to 80% of original height with full memory rebound
  • Increases safety
  • progressive spring rate with superior damping properties
  • Made from patented micro-cellular urethane
  • Will not leak or rupture
  • Never load any vehicle beyond the manufacturer’s GVWR


SumoSprings Trailer Axle - GAWR: 3000-5000 Spring-Under Axle Configuration

  • Weight 8 lbs
    Dimensions 10.75 x 7.25 x 4.5 in
    Spring Height 5 in
    Load Rating 500 lbs at 2.5 in compression
    Spring Diameter 4 in
    Application Summary Trailer Axle, GAWR: 3000-5000 (Spring-Under Axle Configuration) ? Includes line relocation bracket


  • NOTE:
    This product is designed to work on most trailers with the springs mounted below the axle.  Because of the varying build designs from different trailer manufacturers, there are occasionally some models that this product will not fit. For installation of Trailer SumoSprings the gap between the top of the leaf spring and bottom of the frame must be between 7.4″ and 8.65″.


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