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Kelderman 10-12

Kelderman 10-12" Rear Air Suspension Lift Kit, Factory Rear Air Suspension (19+ RAM 3500 4WD)

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Warrior Built Foundation is designed to help combat veterans and wounded service members cope with difficulties in a healthy, positive way. Through activities like drag racing, camping, building cars, or going to a concert, veterans are able to gain motivation and connections with others who share similar experiences. Donating helps fund these awesome Warrior Built initiatives, so now you have the chance to help serve those who have served your country. Historically the Custom Offsets team and customers have been big supporters of our nation’s veterans. This is more than just a giveaway to win a cool truck but more importantly, help us bring our industry and their community together to make a difference in the lives of those in need.

Please allow 1-3 days to confirm the order with the manufacturer.

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One ton trucks need heavy-duty suspension. Now you can have the capability of heavy-duty suspension without a heavy-duty ride quality with a Kelderman 10-12" 4-Link Rear Air Suspension. This kit removes your existing leaf springs and converts it entirely over to air ride. With the help of Industrial airbags, your Ram will now have a smooth ride quality and an increased capacity, both better than stock! This kit will provide upper and lower air bag mounting brackets, airbags, axle clamps, adjustable trailing arms, adjustable panhard bar with heim ends, larger rear sway bar, sway bar end links, and rear crossmember. Shocks and air controls will be sold separately, as well as the 5-6" Front Air Suspension Lift Kit. Use this with our 10-12" Front Air Suspension Lift Kit and the Air Lift 3H Air Control System and you can raise & lower your truck at the push of a button. With no air in the system, the truck will drop down to about a 5" lift to make it easy to get in & out of your truck, park in your garage, load items in the bed, and hook up to trailers. Re-inflate the truck to the 10-12" 'ride height' setting for an unbeatable ride quality while driving down the road. Want to show off what your truck can do? This kit can go up to a 9" lift when fully inflated! Designed for use with 40" tires, this kit is THE BEST option for your suspension needs.


  • 2021 Ram 3500 Big Horn 4WD
  • 2021 Ram 3500 Laramie 4WD
  • 2021 Ram 3500 Limited 4WD
  • 2021 Ram 3500 Limited Longhorn 4WD
  • 2021 Ram 3500 SLT 4WD
  • 2021 Ram 3500 Tradesman 4WD
  • 2020 Ram 3500 Big Horn 4WD
  • 2020 Ram 3500 Laramie 4WD
  • 2020 Ram 3500 Laramie Longhorn 4WD
  • 2020 Ram 3500 Limited 4WD
  • 2020 Ram 3500 Lone Star 4WD
  • 2020 Ram 3500 SLT 4WD
  • 2020 Ram 3500 Tradesman 4WD
  • 2019 Ram 3500 Big Horn 4WD
  • 2019 Ram 3500 Laramie 4WD
  • 2019 Ram 3500 Laramie Longhorn 4WD
  • 2019 Ram 3500 Limited 4WD
  • 2019 Ram 3500 Lone Star 4WD
  • 2019 Ram 3500 SLT 4WD
  • 2019 Ram 3500 Tradesman 4WD

**This part fits a ton of vehicles, so let’s check to see if it fits yours. Don’t see it on the list above? No worries, type your vehicle in the search bar above to see the full list of compatible vehicles.**

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About Us
Nestled in the quiet cornfields of central Iowa, Kelderman Manufacturing has been in business since 1970. Founder/President Gary Kelderman started his own small manufacturing company building innovative products for the agricultural market. Gary is a renowned inventor for his 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/trucks led to the creation of Kelderman Air Suspension. The history of Kelderman Air Suspension first began to take shape when Gary made a common purchase and ended up with a common problem.

Shipping times vary depending on item and immediate availability. Many suspension kits will ship out within 3-5 business days while some select items may take up to 7-10 business days. You will receive the tracking information via email as soon as it is available so you can easily track your package(s) from us, to your door. Keep in mind, some suspension components may ship separately and could arrive at different times. All shipping prices are based on the lower 48 states unless specified otherwise. Always inspect your items immediately upon receipt and notify us within 5 business days if there are any concerns, damages, or missing items.

Kelderman Manufacturing, Inc. offers a 3 year or 100,000 mile Limited Warranty, parts and labor, to the original retail purchaser who owns the vehicle on which the unit was installed, for defects in materials and workmanship related to the fabricated parts. Non fabricated parts such as air bags, air compressors, gauges, solenoid kits, and electronic air ride control systems are covered for 1 year or 50,000 miles for parts and 1 year or 25,000 miles for labor. Kelderman Manufacturing, Inc. must be contacted for warranty authorization before any diagnostic work or repairs are performed. At that time, Kelderman will provide diagnostic assistance and authorization for the repairs if warrantable. Any unauthorized diagnostic work performed before contacting Kelderman will not be covered under the warranty program if deemed unreasonable. Kelderman Manufacturing, Inc. does not warrant any product for finish, alterations, modifications and/or installation different from Keldermans instructions. Alterations / modifications to the final product include, but are not limited to powder coating, plating, and/or welding which will void the warranty. Some damage may occur to the finish of the parts during shipping. This is considered normal and is not covered under warranty. Kelderman tries to ensure that the suspension parts fit the vehicles they were designed for, but due to unknown vehicle manufacturers production changes and/or inconsistencies by the vehicle manufacture, Kelderman cannot be responsible for 100% fitment. Installation of the Kelderman Air Suspension System may void the vehicles factory warranty. It is the consumers responsibility to check with their local vehicles dealer for warranty position before the installation of the system. Keldermans obligation under this warranty is limited to the replacement of the defective parts only. Freight charges, incidental or consequential damages are expressly excluded from this warranty. Kelderman is not responsible for damages and/or warranty of other vehicle parts related or non-related to the installed Kelderman Air Suspension System. This warranty is expressly in lieu of all other warranties expressed or implied. This warranty shall not apply to any product that has been subject to accident, negligence, alteration, abuse or misuse as determined by Kelderman. Kelderman Air Suspension Systems are designed to be installed, and ran at the recommended ride heights provided by Kelderman. All warranties will become void if Kelderman systems are ran outside the recommended ride heights, or if the systems are combined/substituted with other suspension kits. Combination and/or substitution of other components may cause premature wear and inhibit the Kelderman Air Suspension System from operating as designed, which may cause severe injury or death. Kelderman does not warrant parts not manufactured by Kelderman. It is the installer and sellers reasonability to review all these warranties, warnings and disclaimers with the consumer prior to installation. Kelderman reserves the right to supercede, discontinue, change designs, finishes, part numbers and/or applications of parts deemed necessary without written notice. Kelderman is not responsible for misprints, or typographical errors within the catalog or price sheets.

WARNING: This product can expose you to Nickel, which is known to the State of California to cause cancer, birth defects, or other reproductive harm. For more information, go to p65warnings.ca.gov.

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