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2,500-lb Capacity. Upgrade your rear suspension by installing these helper leaf springs above your Ford F-350 Super Duty's factory leaf springs. They significantly reduce sway and prevent sagging, which is perfect for towing or hauling heavy loads.
Features:
Specs:
Note: This kit is designed to fit a vehicle with factory top overload springs. As shown in the picture above, a top overload spring sits above the factory leaf spring pack.
These additional leaf springs add support and sway control to your existing OEM suspension. Just bolt on SuperSprings over your existing factory springs, and they automatically work when you need them. As the factory spring flexes, a roller at each end of the beefy helper spring reacts to engage the helper spring and to provide extra support. The springs help to better distribute cargo weight throughout your existing suspension, channeling that weight to the points on the frame that are designed to support heavy loads.
Placing these leaf springs above your factory springs helps to keep your OEM springs from twisting, so the SuperSprings act like a sway bar, reducing the body roll that makes driving more difficult and dangerous. With these helper springs, driving is safer and easier when it's windy, when your vehicle is rocked by a passing semi, and when you are cornering. The springs help to reduce sway by up to 30 percent. SuperSprings also allow more wheel travel in the rear suspension when they are under load, so they maintain traction and ride comfort better than rubber or polyurethane bumpers. That means they're great for drivers who frequently tow.
You can also customize the level of support provided by SuperSprings. For most models, the shackles that attach the helper leaf springs to your existing leaf springs have several installation options:
SuperSprings are a maintenance-free, low-cost alternative to air spring systems, which require constant monitoring and air pressure adjustment. These helper leaf springs respond automatically to the load you carry, so there is no crawling under your truck to adjust them. You'll also reduce wear and tear on your suspension, brakes, and tires, which saves you money. The bolt-on installation means that they are easy to fit - no drilling required.
Average Customer Rating: 4.7 out of 5 stars (236 Customer Reviews)
2,500-lb Capacity. Upgrade your rear suspension by installing these helper leaf springs above your vehicle's factory leaf springs. They significantly reduce sway and prevent sagging, which is perfect for towing or hauling heavy loads.Installing these on a 2020 F250 was easier than I thought it would be. I was able to get the springs on whit the center piece and the front shackle bolted without jacking up the truck. I had to jack the frame up a few inches on each side to get the back shackle bolt through. I put the shackle bolts through the bottom holes since I only need the extra support when I tow. I recommend air / power tools for the shackle nuts and it doesn’t hurt using them for the center bracket u bolts. They are lock nuts and they have a long way to run on for each bolt. I did have to bend my parking brake cable hangar out a bit for one of the shackle bolts to clear the cable. The truck seems to sit a little higher in the back. Maybe an inch or so. The ride empty seemed the same except it felt like it didn’t roll quite as much when turning. Rolling over a lip at the end of our driveway the extra stiffness was noticeable, however. I won’t know how well they really work until I get my fifth wheel hooked up.
No issues with install on a 2023, E350 Class C motorhome.
After chalking the front wheels, I used two 3 ton floor jacks with 13” 6x6 blocks just behind the springs to lift the frame and rear tires off the ground to remove the wheels. For safety, 3 ton jack stands were put under the axles during spring installation
After installing the springs per manufacturer instructions, two 1/2” x 10” pieces of all thread with drilled flat bar were used to compress the front end spring.
With the least amount of preload it raised the back a good inch.
The 800# trailer tongue weight will be the next test to see if more preload is needed for a level ride height.
This was by far the easiest mod I have made to my 2019 Ford Super Duty King Ranch! Only took 45 minutes start to finish. Didn't even take the wheels off. Took some pressure off of the springs by lifting the rear end a little using the trailer hitch. Used the bottom holes on both ends and only raised the rear of the body 1 inch. Great product!
Product worked as described. Shipping was quick (etrailer used "air" to my state, then on UPS truck)
Easy to install, not sure why they included 2 sets of polyurethane blocks (only one set fit my truck)
Don't notice any ride difference when set at lowest setting. Raised truck approximately 3/4". East to readjust for more preload if needed.
Combined these Super Springs with Timbren load handlers. So far so good.
Great improvement over stock while maintaining ride quality.
Fit was perfect. Only raised the back bumper 3/4" on the lowest setting, which is what I was hoping for. My customer was very pleased and was really looking forward to pulling his fifth wheel without so much sag.
Installation time was less than 45 minutes without removing the wheels.
Raised the bed about 1/2” after install, unloaded weight ride was not changed much. The anti sway was what I was after, towing 33’ TT and it really made a difference. Install was a breeze with wheels on. F250, thought I would have to cut up the plastic fuel tank shield on driver side. Ended up taking out the top bolt and reversing with the head in and nut outside
GREAT HELP, EXCELLENT FIT. FAST DELIVERY. ILL DEFINENTLY USE YOU GUYS AGAIN!!
The product worked great but shipping and instruction weren’t the best the super springs were sticking out of the box luckily all the hardware was there. For such a heavy product the thin cardboard box didn’t cut it. The instruction were very poor. Came for 5 different model years except mine
Excellent product, outstanding service
Instructions very generic.if I wasn't a mechanic for 50 yrs,I'm not sure I would have been able to install these. Instructions not clear and did not show anything about a Ford e450 rv
Work excellent, keeps the rear up under load. Great service at etrailer also
This is the 3rd pickup I have put them on. Great product easy to install
Fitment was great easy to install leveled my truck out and didn't affect the ride at all
Easy ordering and fast service 2 thumbs up
Fast delivery easy ordering. Thanks
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Condition: Missing Parts
Notes: 1Z7586X39092752725 Missing Hardware
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Jenny N.
11/5/2021
Thank you for your feedback. The installation manual is meant to be a guide and it is recommended that the install is done by a professional or a person with sound mechanical knowledge.