National Spring Inc. was originally founded in 1934 in Milwaukee, Wisconsin for the purpose of manufacturing and supplying leaf springs for automobiles and trucks. The company has evolved and expanded to become a distributor of leaf springs, trailer springs and parts, suspension parts, brake parts, front-end parts and Timbren kits. We provide parts for all makes and models of light, medium and heavy duty trucks.

National Spring also provides a full service repair facility. Our experienced mechanics have over a century of combined suspension experience. We provide suspension repairs on all suspensions, including Hendrickson and Chalmers. We also perform front-end work, complete computerized alignments, brake and wheel end service as well as DOT inspections. The types of vehicles we service range from pick-ups to medium duty trucks to heavy duty trucks. We repair light and heavy duty trailers, fire trucks as well as garbage trucks. Our customer base is comprised of small to large companies as well as municipalities.