Recommended Suspension Upgrade for a 2021 Ram ProMaster 3500

Question:

I have a promaster 3500 and on a camper build out I was going to put air lift 5000 on rear can and should I use the coil spring helpers on front?

asked by: Ken H

Helpful Expert Reply:

Yes, you should add the Coil SumoSprings Custom Helper Springs for Coil Spring Suspension item # CSS-1195F to the front suspension on your 2021 Ram ProMaster 3500. These helper springs adjusts progressively to the weight of your load. I have linked a review video below.

As far as your air lift system goes for the rear end, I recommend the Air Lift LoadLifter 5000 Ultimate Air Helper Springs with Internal Jounce Bumpers item # AL88233. This system includes a jounce bumper that will stop your air bags from completely deflating when your ProMaster is sitting idle for a few days. If the air bags completely deflate it will cause damage to the brackets when they come into contact. The jounce's keep the air bags from completely compressing.

I also recommend the Air Lift WirelessAIR Compressor System for Air Helper Springs item # AL74000EZ. Air Lift's premium, wireless, onboard compressor system with Bluetooth allows you to fill your air springs at the touch of a button. The WirelessAIR also automatically maintains pre-set air pressure levels. It lets you adjust two air springs independently with the wireless remote control. This allows you to level your ProMaster front to back. It also allows you to get side-to-side leveling of off-center loads by inflating each spring with a different amount of air.

expert reply by: Jerred H