Slipper spring system for axles rated up to 6,000 pounds. Comfort Ride will significantly reduce the cause of these common symptoms: Chucking - the truck is rocked forward and aft when the trailer goes over uneven pavement (dips, frost heaves and the infamous bridge expansion joints) Axle roll-up - during braking, the trailer's rear tires are lifted enough to cause a loss in traction (and a rise in the driver's blood pressure). Axle roll-up is why your back axle tires occasionally lock up momentarily when stopping. The harder the stop, the more prevalent it becomes. Suspension rebound - when one tire goes over an obstacle, the trailer tips sideways. After the tire clears the obstacle, the leaf springs (and the trailer with them) rebound like a pogo stick. *Kits include four slipper springs, patented slipper box, hardware, and detailed instructions. Each kit contains the components for a tandem axle trailer. To get the correct leaf spring capacity, you will need to know your trailer's axle weight rating.

 PROP 65 WARNING: This product may contain chemicals known to the State of California to cause cancer and birth defects or other reproductive harm. Wash hands after handling. For more information, visit www.P65Warnings.ca.gov