OTR Premium Low Arch Trailer Leaf Spring 3-Leaf 12,500 lb Capacity 3.00" Width 22.00/21.75" Lengths is engineered to restore and maintain trailer axle positioning, load support and ride height for heavy-duty trailer applications. This three-leaf, low-arch assembly is built to Spring Research Institute guidelines and is offered as a direct replacement for original trailer leaf springs used in Reyco-style suspensions and similar configurations. With a spring arch of 3.75" and a pack thickness sized to match OEM spacing, the assembly provides a rated spring capacity at the pad of 12,500 lb, enabling fleets to retain axle load ratings and distribute payload forces correctly across the suspension system. Installing a correctly sized low-arch spring reduces excessive axle movement and helps preserve alignment and tire wear patterns when compared to worn, flattened springs. The components tapered design and specified long and short end surface lengths (22.00" and 21.75" respectively) allow fitment into slipper- or hook-style mounting arrangements without modification to hanger or axle components in compatible applications. Backed by a manufacturer parts warranty, the spring is intended for service replacement scenarios caused by overloading, corrosion, or fracture of existing springs. For fleet maintenance planners, this spring provides predictable, repeatable load-carrying behavior and straightforward interchangeability with common aftermarket and OEM equivalents, supporting faster repair cycles and reducing shop downtime. Specification-driven construction and a standard finish also assist in visual inspection and corrosion resistance practices typical in heavy-use trailer fleets.