Upgrade your trailer with this Dexter / Rockwell American 3,500 lb Idler Trailer Axle Kit — a complete solution for smooth and reliable towing. This kit includes a 3,500 lb idler axle with pre-installed hubs, high-quality bearings, durable U-bolts, leaf springs, and a standard hanger kit for easy installation. Designed with a 5 on 4.5” bolt pattern, 89” hubface, and 74” spring center, it fits most single-axle trailers with a 76” wide frame. This axle features a superior powder-coated finish and Posi-Lube spindles for long-lasting protection and easier bearing maintenance. Whether you're building a new trailer or replacing worn components, this all-in-one axle kit delivers trusted performance and long-term durability.