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-107-40 is designed for trailer frames with a GAWR of 3,000-5,000 lbs with the spring sitting on top of the axle tube. The Black SumoSprings shouldn’t be compressed past 65% of their original height in order to keep full memory rebound.
 
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
 
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 TVs, and other components by minimizing bounce, hop, and sway associated with most tow-able RVs. Reduced sway and bounce in the trailer results in increased driver control, ride comfort, reduced maintenance costs, and reduced overall cost of trailer ownership.