Product Details: With Expertise Built In™, the OTR Premium Heavy Duty High Arch Trailer Leaf Spring meets or exceeds OEM quality and is a direct replacement for OEM leaf springs. This heavy duty trailer leaf spring minimizes vibration and provides maximum ride comfort. This OTR leaf spring replacement creates a smoother ride with optimized shock absorption. You receive reliable support with any weight added to the vehicle, with excellent buckling and snapping prevention. This heavy duty trailer leaf spring delivers the durability and reliability you expect for your semi truck suspension's leaf springs. FleetPride is your First Click in Heavy Duty®.