Two New Suspension Products for Ambulances, Limousines and Shuttle Buses Brought to You by Kelderman Air Suspensions

July 12, 2011

OSKLOOSA, IA – Adding a Kelderman Air Ride conversion kit to your existing suspension will provide a level of comfort you thought was impossible. Two new suspension kits are available for ambulances, limousines and shuttle buses. An airbag system for the Ford E350 and E450 popular as a shuttle bus and ambulance conversion and the traditional four-link system created for the 3500 Heavy-Duty 2011 Chevy cab chassis that is mostly used in ambulance models.

The new two bag rear system, designed for the Ford E350 and E450 2008 chassis, attaches to the rear of the leaf spring shackle. This is a proven design for over 20 years on other truck applications. It provides a much smoother ride than springs, rubber sheer systems, & air spring helpers. It is extremely reliable, is competitively priced, and comes with automatic leveling valve air system. The two bag system has only two wear points, making this suspension extremely inexpensive to maintain. This suspension is also equipped with a newly designed air kit provided by a well known name in the industry. Past history indicates a solid record of reliability with very little warranty issues.

The two bag rear system is not to be confused with just adding an air bag between the axle and the frame. This type of system is merely a helper for the springs to allow additional weight carrying capacity. It does nothing for the ride qualities of the vehicle and in many situations degrades the ride. The two bag suspension is a unitized system, meaning it is not an independent suspension. By connecting the driver and passenger sides together with cross members, excellent roll resistance is accomplished, making it far superior than helper bags for the springs and rubber sheer systems. To view a You Tube video, go to

Installation of the new E350/ E450 system is very simple. Bolt it up against the frame behind the springs, connect it to the rear shackle, mount the pre assemble air kit, and you’re ready to go. After hanging the first unit, an average technician can do the installation in about three hours. Minor exhaust changes may be needed. The installed price of this suspension should be about half the price of the traditional suspensions that replace the springs entirely. This new price point will finally allow several bus, limo, and ambulance companies an affordable option to substantially improve their ride.

The new bolt-on kit for GM 3500HD 2007 and newer trucks smoothes out the bumps in the road while keeping the truck bed level, even with the addition of heavy payloads. The unique, four link four bag system with automatic leveling, dump feature, mechanical or electronic controls is reliable, tough and allows truck to ride two inches below stock height. Kelderman products provide the ultimate in air ride comfort and operator control with numerous height control options available. The kit features parallel trailing arms to eliminate axle twist and minimizes pinion angle movement, transferring power to the ground for a more stable, comfortable ride. The factory sway bar is not removed. Kelderman uses quality Firestone air bags and provides everything required for installation including all hardware with easy to read instructions.

Ride comfort is the very best reason to install a highly engineered air ride suspension kit from Kelderman Manufacturing. For more information, call Kelderman’s technical assistance toll free number at 800-334-6150. Kelderman Manufacturing is located at 2686 Highway 92, Oskaloosa, IA 52577