Product Details: Boasting of Expertise Built In™, the OTR Premium Medium Arch Trailer Leaf Spring meets or exceeds OEM quality and is a direct replacement for OEM leaf springs. This OTR trailer leaf spring replacement is superior at providing maximum ride comfort and minimizing vibration. This leaf spring creates a smoother ride with optimized shock absorption. At the same time, you will receive ultimate support with any weight added to the vehicle and excellent buckling and snapping prevention. As a result, you receive the reliability and durability you should expect from your semi truck's suspension leaf springs. FleetPride is your First Click in Heavy Duty®.