SuperSprings SSR-117-47 Left and Right Rear Black SumoSprings fits 2009 2020 F150 4x4 | Reduces Rear End Sag, Decreases Vibration, Stabilizes Sway & Softens Harsh Rebounds

Installation:The SumoSprings were very easy to install. Total install time was about an 1 hour on a 2013 F150. The location and difficulty of removing the factory bolts was the only issue that added to install time. Removing the rear wheels before install would be advisable.Performance:The SumoSprings definitely increased the ride height of the truck when hauling. I installed these to counteract the tongue weight of the travel trailer that I haul (about 800 lbs). Without the springs there was a lot of squat and dolphining when towing even with the weight distribution hitch. After I installed the springs the squat is minimal and most of the dolphining is absorbed by the springs while towing. I can't speak on any sway or stability performance increase while towing because I never experience a problem without the springs. Sway control was not an issues, and continues to not be an issue with the SumoSprings installed. Overall, I am very impressed by how much these springs changed the performance of the truck. I am very pleased.Unloaded:There is no identifiable, negative change to the truck when unloaded that I can notice. In fact, the only two attributes that I feel might have changed are positives. I believe the truck absorbs shock from bumps much better. What was once rattle and clatter is now a thump and dampen experience that is quite noticeable. The other change is body roll. The SumoSprings noticeably react while cornering to counteract body roll. The truck is much more stable in turns, and I can only assume that provides added stability while towing. I enjoy that it did not change ride height and did not stiffen the suspension.SSR-117-47: I ordered these because they are rated at 1500 lbs. The other springs on Amazon are rated at 1000 lbs. These did not show they were compatible with my truck from Amazon. However, they were the model number that was recommended by the SuperSprings website. I had no fitment issues. Not to mention the price was unbelievable!Conclusion:Extremely happy. I had some reservation with the bump stop replacement springs not being able to provide the additional support I needed. I wanted to increase ride height while towing, and my concern with the SumoSprings is that the 1500 lbs was not available until the springs were 50% compressed. I was afraid that the squat was still going to be present with these type of springs. This could not have been any further from the truth. The SumoSprings dramatically increased ride height, and performed flawlessly for what I wanted. I am highly recommend these towing applications.

Easy to install, and do not adversely affect daily driving, yet help tremendously to stabilize the vehicle and reduce sagging when towing heavy trailers or hauling heavy loads.

Cheap and effective. Without a load these don't touch. With a load these are slightly pre-loaded. With Road Active Suspension and Sumo Springs that will about max out a half-ton trucks payload and towing, it won't make it haul more, but it feels better towing with these on. Less sway and less body roll.

Worked out well, set the springs without the spacers and have a buffer from daily driving and will be using these when I pull the camper later this month!

Super easy to install with basic tools. 13mm deep socket with extension and a 15mm socket and wrench. I used an old school air wrench to remove the bumper and install the metal sumospring frame. My new F150 FX4 had room over the axle to install the unit without using any jacks. Only took 10 minutes to install. Gave my truck a stiffer ride from the start. I then installed some RS9000 rancho shocks and it helped iron out the hop and bounce. Hooked up to my 16 ft float trailer yesterday empty. The truck barely sank and the springs started to work like they should. With the tractor on the trailer it should ride just right. On the highway last week had to make a very fast lane change to avoid a tire casing that was in the road. The sideways roll of the truck was nothing and it did not hesitate to give me great control. The great lateral stability and heavy load control the stiffer ride is worth it. We will see how long they last. For the price and ease of removal they can easily be replaced if needed.

Great product and easy to install, although the first removal (right side) took 4X the time…not a product issue but one side took SIGNIFICANTLY longer to remove. Total time to remove/replace left (2nd) side was about 8 minutes. Have not driven with trailer yet but looks like it’ll work great to limit “sag”. I used it on a 2018 Ford F-150 Super Crew 4WD. Did not use the optional spacer because it would have taken out all movement. Ended up with about 3/4-1” movement prior to SumoSpring engagement. All in all, great product. I will update if not great with trailer attached.

So when I was purchasing these I had my doubts they would help much, but what a day and night difference when towing my 30ft travel trailer, with my 2015 ford f-150. They helped stabilized the truck at highway speeds, with little to no squat. These worked better than the add a leaf kits I've used in the past. Will definitely purchase agian.

I installed these on my 2015 F150 and they work great for helping to stiffen the rear while I tow our 31 foot travel trailer. Even when I had our weight distribution hitch on, the rear of my truck would squat about 1.5-2 inches. After I installed the Sumo Springs it squats .5 inch at most. My only complaint is when my truck is unloaded it makes for a little bit of a rough ride, like a 3/4 ton truck. It’s not horrible, but the ride of a half ton is way smoother. The are easy enough to take off and then re-install before I tow my trailer. I would highly recommend these for towing.