50+ Years of Kelderman Innovation

Kelderman Manufacturing has been innovating in the agricultural and automotive industries for over five decades. Family-owned and operated, our commitment has remained the same: building the best products right in the heart of the Midwest.


Inventive Solutions, from Agriculture to Automobiles

Nestled in the quiet cornfields of central Iowa, Kelderman Manufacturing has been in business since 1970. Founder Gary Kelderman started his own small manufacturing company building new products for the agricultural market. Gary is renowned for his inventive work with rubber track systems, corn harvesting attachments, hay-raking equipment, and more. 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.

Gary Kelderman wearing a helmet and driving a vehicle in the 1970s
1989-1993 Ram 2500/3500 Bravo Series Front Bumper

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 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. The design is still in production today.


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. Gary’s son, Jeff, now operates as President of Kelderman Manufacturing. What started as a small agricultural fab shop continues to move forward as a leading innovator in the agricultural and automotive industries.

A black Ford truck hauling a trailer
Gary Kelderman wearing a helmet and driving a vehicle in the 1970s

Fun Fact: Gary has his pilot’s license and loves to spend time up in the sky with his personal gyrocopter!