Kelderman

From Iowa Cornfields to the Open Road: The Kelderman Story

Kelderman Manufacturing is one of the most respected names in heavy-duty truck suspension and accessories — a family-owned company whose roots stretch back to 1970. Nestled in the cornfields of central Iowa, Kelderman Manufacturing has been in business since 1970, when founder Gary Kelderman started his own small manufacturing company building innovative products for the agricultural market. Gary holds over 25 patents on items such as rubber track systems for combines and tractors, corn harvesting attachments, hay raking equipment, and air suspension systems.

Kelderman existed only in the agricultural marketplace for roughly 20 years until Gary's passion for cars and trucks led to the creation of the Kelderman Air Suspension. The inspiration came when Gary made a common purchase and ended up with a common problem: in 1990, he bought a new Dodge Ram with a Cummins engine right off the showroom floor. He was so dissatisfied with the poor ride quality that he parked it to develop a solution. Several months of design and fabrication later, Gary emerged with the creation of the Kelderman 2-Stage Rear Air Suspension, which made the truck ride like he really wanted it to. That design is still in production today.

A Legacy of Innovation Built in America

Kelderman Manufacturing is a Midwestern producer of aftermarket air suspension systems and accessories for ¾-ton and larger trucks, trailers, and RVs, with over 50 years of experience building agricultural and automotive products — all as a family-owned business committed to innovative products. All products are 100% American-made, right in Iowa.

Over the next 30-plus years, Kelderman developed additional air suspension designs for pickup trucks, chassis cab trucks, RVs, trailers, and even full air suspension lift kits. Today, the brand's lineup spans everything from stock-height air suspension systems and air suspension lift kits to heavy-duty bumpers, grille guards, and shocks — all engineered for the demands of serious truck owners.

Air Suspension Systems: Ride Quality Without Compromise

Kelderman is far and away one of the largest air suspension manufacturers for three-quarter-ton and larger trucks. If you're looking for an air suspension lift kit that won't compromise ride quality, towing, or style, Kelderman's Air Suspension Systems offer many lift kit configurations for ¾-ton and larger trucks. The brand's two-stage design philosophy — which allows the suspension to adapt to both light and heavy load conditions — is what sets Kelderman apart from conventional spring-based alternatives.

Lift Kits for the Serious Truck Enthusiast

Kelderman's 5–6" Air Suspension Lift Kit is its most popular lift kit for Super Duty trucks, providing enough lift for a great stance and clearance for 37" tires while still being completely usable as a daily driver, tow vehicle, and more. Whether you need a moderate lift for better approach angles or a more aggressive setup for off-road clearance, Kelderman engineers each kit to maintain the ride quality and towing capacity that heavy-duty truck owners depend on.

Bumpers, Grille Guards & Truck Accessories

Kelderman now offers a full lineup of heavy-duty bumpers and grilles for the heavy-duty trucks the brand has specialized in for over 30 years. Kelderman produces high-quality bumpers with a unique three-piece design that provides unprecedented versatility for an aftermarket bumper. The Commander Grille Guard, an increasingly popular add-on to the Alpha Series Front Bumper, provides even more protection and features optional light bar cutouts and clevis hook mounts.

Suspension, bumpers, grilles, and more are available from a company that has been on the cover of Truckin' Magazine, 8-Lug, Diesel World, Truck Trend, and more. Kelderman has more than 150 dealers spread across the United States, Canada, and Australia. Whether you're building a show truck or a hard-working daily driver, Kelderman's all-American engineering gives you the performance and confidence to take on any road.