Image of Thuren Fabrication 2013-2022 Dodge Ram 3500 Leaf Springs
Image of Thuren Fabrication 2013-2022 Dodge Ram 3500 Leaf Springs Thuren vs OEM Chart

2013-2022 Dodge Ram 3500 Leaf Springs

SKU: TF-LFSP3500-13U

Regular price $1,200.00
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Our 2013+ RAM 3500 leaf springs provide a massive improvement in ride quality in all aspects of the ride!

Huge improvement with small bump chatter, washboard road control, and reduction in axle wrap in soft terrain/sand/snow.

Moderate loaded weight lets you really use the travel, these leafs give much more usable wheel travel off road, all while still being able to tow fairly heavy even without airbags or extra weight handing add-on products.

If you look at the weight graphic image, you can see how these leafs are still progressive, but not such a light-switch ramp up like the OEM leafs. The last few inches of the travel are barely usable with the stock leafs.

The biggest improvement with these leafs is comparing the ride with 500 to 2000 pounds in the bed. It's like a whole new truck! With moderate weight, these leafs give the impression you increased your suspension travel about 80%.

Fitment:

  • These leaf springs Do Not fit the 2013 and up OEM factory air-ride trucks.
Details:
  • Provides about 1/2" lift over the stock rear leaf height.
  • 2500lbs loaded in the bed only drops the rear height about 2.5", but being a progressive rate initially they also ride softer than OEM unloaded.
  • Heat treated, shot peened, and manufactured from the highest quality materials available.
  • Thick main leaf can handle heavy towing loads.
  • Can provide a true 12" of active wheel travel, bolted into the stock shackle.
  • Can provide a true 14" of active wheel travel, bolted into our long travel shackle.
  • Uses OEM style torsional rubber bushings.
  • Designed to mount using the factory OEM u-bolts.
  • Moves rear axle back slightly to help 37" tires clear the fender better, under extreme use.
  • Drastic reduction in axle drive chatter, or wheel hop, in soft terrain/sand/snow. 

Note 1 - We ship these leaf springs via UPS ground. They are very heavy and awkward, so picking up at your local UPS hub might be something you want to do. Your driver will have a borderline impossible time getting them to your door if there is no help. Once you get a tracking number from us, call UPS and have them kept on hold at your local UPS hub, if you prefer.

Note 2 - Shipping cost for these leaf springs can be expensive, and the UPS quote system is not always accurate. If the delivered costs are more than charged at the time of purchase, we will email or call you to discuss options, and/or extra fee's due. This is VERY rare, but we must mention it.

Note 3 - These leaf springs only fit 2013+ 3500 trucks. The 2003-2012 Ram 3500 is a completely different frame.

Note 4 - The OEM u-bolts only work if you have a Single-rear-wheel truck, or a Dually that by chance does not have the upper overload leafs. If you have a Dually with the upper overloads, you need to get some U-bolts from the dealer for a SRW truck, or have a spring shop make some u-bolts for you, as the ones on your truck are too long.

Note 5 - These leaf springs do not fit trucks that came equipped with rear air bags/OEM air-ride, from the factory when new.

Quick note on leaf springs and travel measurements:

Often you will see claims of big travel numbers (18" to 22" travel) with leaf springs. Those numbers are very hard to attain when it comes to TRUE suspension travel.

Often you will see these big travel numbers measured when the truck is on a lift, and the weight of the axle assembly is pulling the leaf springs down. We do not measure travel with that technique, as when the vehicle is at speed, and the axle needs to drop into a big hole or the chassis lifts after a bump, gravity does not play a part in this type of suspension action.

When the leaf springs individually start to separate, on the chassis lift as the axle drops away from the body, this is where we stop measuring our claimed travel numbers.

Customer Reviews

Based on 7 reviews
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(6)
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William Carter
2016 ram 3500 rear leaf springs

It’s kinda early to leave a full review because I’ve just gotten everything installed. I would have rated the springs a little higher but have left a star out due to the lack of installation instructions from thurin. While everything was installed as the other springs came out I feel it would be helpful to have rear leaf torque requirements included by Thurin. So far great and time will tell if this is going to be a noticeable upgrade to my truck

R
Richard j.
2022 ram 3500 long box

I installed the Thuren leaf springs and shackles. The shackles sounded like a squeaky bed in a cheap motel room but once broken in they are smooth and no sound.
The rear leaf spring took awhile to break it and following OEM torque spec will cause them to bind, I would follow Thurens torque specs. It took about 2500miles
for the springs to really loosen up and feel great. Since the 5th gen rams sit 2.5in lower from factory in the rear, these springs will lift the rear of the truck 1.5" and
with the thuren shackles on lower setting i am still 1" higher than factory height. If you plan to set anything over 2500lbs in the bed i would suggest air bags. I have
had 5000lbs in the bed air bags at 90psi and 2 hour drive no issues and drives great.

J
Jason Baehm
Nice Upgrade

Installed these on 2019 Laramie Crew Cab Long box. Used with Thuren Shackles in lowest settings. Raised pickup 1” exactly, ride is fantastic and coupled with Thuren Fox 2.0 shocks

J
John Lytle
Better ride

Have of these on 2of my 3500’s. Second set removed 1 leave mid pack and really smoothed out ride. Would highly recommend.

S
Steven McMahon
2017 Ram 3500 rear leafs

A REQUIRED modification to any 3500. I installed just the rear leaf springs with the fox shocks, in my driveway, in the pouring rain, in the dark, in about 4 hours. Everything fit perfectly as advertised like a well designed kit should. As for the ride quality the best comparison I can make is that the (unloaded) rear now rides slightly softer than the stock front springs do but with fantastic control over the axle. One bump actually feels like one bump now, not 3 or 4 because the axle chatters across the road. I also towed a 5000lb trailer 1300 miles the weekend I installed this kit and am only upset I didn't buy this kit the day I drove off the lot. Will be buying the front next and 1000% recommend to anyone with a 3500. I can't stress this enough, if you are debating, this is one mod that is not optional...you must do it.