You're bouncing down a backroad over ruts and bumps, but your trailer isn't taking the beating. The spring flexes with the road and takes the hit so your trailer doesn't.
Leaf springs flex to take the edge off rough roads, letting the axle move without hammering the trailer frame. That means less wear on your trailer and a smoother pull behind the truck.
The spring is the solid link between your axle and frame. It holds the weight, keeps alignment true, and lets the suspension do its job mile after mile.
Three layers of steel share the load, spreading weight across the spring so it resists sagging and keeps working longer.
Mounting requires hangers, a suspension bolt, and sometimes a keeper bolt. The front eye bolts to the hanger, and the slipper end slides into the rear hanger or an equalizer on multi-axle trailers. If you are fabricating, match your hanger kit to your axle capacity. If you are replacing, swap bolts too since they wear out just like springs. Always replace springs in pairs since mixing new and old can throw off alignment.
Leaf springs should always be replaced in pairs to maintain proper axle alignment and suspension performance.
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