1991 Freightliner FLD-Series Suspension Enhancement

Hey Doug! The Firestone Ride-Rite Air Helper Springs #F35FV are the right kit for your 2026 Ford F-350 FX4 dually. However, you will need to measure to be sure it fits. The distance from the top of your rear axle to the top of the jounce bump stop…

Since the pin weight of your camper is 2.1k, I recommend going with the LoadLifter 5000 opposed to the 7500. While technically there is not reason you couldn't use the 7500 kit, it really is not necessary for a camper like yours. Generally the…

Hello Matt, I was seeing some mixed information on this as well, so I reached out directly to my contact at Firestone to confirm. The Firestone Ride-Rite Air Bags w/ Easy Mount Compressor - Wireless Control - Single Path - 5,000 lbs #F44XV will fit…

The differences between the Firestone Ride Rite #F2613 and the Red Label #F2709 for your 2023 GMC Sierra 3500 Crew Cab Long Bed is the air pressure and max weight capacity. The Ride-Rite #F2613 are rated for 5,000lbs and 100 PSI, where the Red Label…

Hey Mike, welcome back! Both the Firestone Ride-Rite #F2613 rated for 5,000 lbs, and the Firestone Ride-Rite Red Label #F2709 rated for 7,500 lbs will keep you at factory ride height when you aren't towing. All you need to do is run the air bags…

For sag from towing a trailer the best recommendation I can make is actually a weight distribution system. Suspension enhancement will help level your truck while towing. But the advantage to a weight distribution system is that it levels the vehicle…

Hey Steve, The AirLift airbags with internal jounce bumpers are not able to be added to a system without so you would need to get a whole new system. With that said the system with the internal jounce bumpers is going to create a much rougher ride…

Hello Jake, Thanks for writing in. I double checked with SuperSprings, and there are not any SumoSprings available for the 1992 Ford E-350. I see that you already ordered exactly what I was going to recommend, the SuperSprings Custom Suspension…

Hey Kent! Your Alliance Avenue already has some great suspension components with the MORryde CRE3000 equalizers, wet bolt kit, and Rota-Flex pin box. I wouldn't replace any of those unless you're experiencing a specific problem. The next…

Hello Barry, Since you already have a weight distribution (WD) hitch and are only experiencing a little rear sag, I recommend going with SumoSprings. I typically only suggest Timbrens for those who are towing heavy loads regularly, as they can create…

Hi Tim, That's a great question! While Timbrens and SumoSprings are both suspension enhancements, they perform differently depending on how much weight you're towing/hauling and how often you're planning on towing/hauling. The only…

Hey Bob, congrats on a setting up a new camper! Out of all of those options you'll also need to consider daily driving comfort unless that camper is a permanent addition to your truck bed. Listed below are a brief breakdown of each and a…