Original (RAS®) RoadActive Suspension 3611-YHD | Fits Ford F150 4WD 2009-2025

WOW! Believe every word of the hype. My 2016 F150 felt a little bouncy with a full bed, wasn’t really over the top but I carry a decent amount of tools and boxes back there so it was always a little unsettled. My tools are just heavy enough that it took the rake out of the truck and made it ride really rough over uneven surfaces or bumps. The RAS sorted it out perfectly. I used the black disc assuming it would be best because I always have weight in the bed. It takes a second to get used to, but that’s honestly because of how strangely smooth it rides. It’s very obviously still a truck, don’t get me wrong, but it fixed the ride height and really settled the rear end down. Took about 2 hours but that’s with me basing it off videos I’d watched weeks ago and setting one of the brackets to the wrong hole initially. Use the 3rd one from the end, otherwise the spring will rub against the rebound clip. Otherwise it was a breeze. For my 2016, the bump stop spacer/relocation puck didn’t have roll pins in it, but it sat flush and tightened down nicely, I see no problem with it because you’d really be doing something silly if you ended up on the bump stops with this kit installed anyway…. Worth every cent! Don’t buy the fakes. These springs are under a LOT of tension, do not chance it. Those Chinese fakes will break, violently.

My 2021 F150 didn't like towing my 27' travel trailer. Had more sag, even with weight distribution system, than I liked. Got these hoping to get more lift and support in the rear end of the truck. Installation was pretty straight forward ONCE I figured out how to unscrew them to make them fit correctly. For a bit there, I was getting worried that I ordered the wrong ones, but a little Google showed me where I was missing the unscrewing. To fit them in the box, the factory way screws them down, and you have to open them up all the way by loosing the threads. Now, results after the 30 minute installation....towed like a champ! Back end with trailer, RAS, and weight distribution was back to even and kept the steering and suspension feeling right. Without the trailer there is a little more bounce than before, but after a few days I adjusted to it and don't even notice it. I actually like the lift stance it gave the truck. And who knows, I was probably used to a soft ride and this is probably how a 150FX should feel. Overall, this was the best investment for my peace while towing, and truly made me feel more in control than before. Well built product and glad I did the authentic RAS and not a knockoff. Do yourself a favor if in doubt about your tow capacity and comfort....install these.

2019 5.0 f150 was uncomfortable to drive on torn up Alaska highways. If I hit a bump in a sharp corner, the rear end would hop and bounce. How can I make my truck handle more like a sports car? I installed a Hellwig rear sway bar, Bilstein 5100 shocks, and drop shackles but those didn’t fix it. This is what I was looking for!!! Wheel hop is gone, she takes bumps and corners like a sporty SUV. These also act like traction bars so hooks up way better. The steering wheel stays completely still on dirt roads. First day I had it I sent my dog flying across the truck testing in a parking lot. By far the best mod I’ve done, truck is a joy to drive. It raised the rear an inch but completely worth it. It floats down the highway more comfortably than my BMW. 80mph feels like 50. Maybe I’ll get a supercharger now that I have confidence driving fast on bumpy frost heaved roads. 700 hp doesn’t sound……… as terrifying.

These lifted the rear of my leveled f150 and better yet stiffened the rear to hold weight better. Before when pulling a moderate trailer that had decent tongue weight my truck squatted bad and kinda bounced and I hated it. Now with the installed the rear is much stiffer and no more bounce. These were pricey but well worth it to me based on the results after install. Unloaded ride is stiffer than before some but not bad at all and it actually feels better to me for everyday driving. 10/10 recommend

This does exactly what it is intended to do. It’s built very well and is super easy to install. The biggest thing I like about this is the stop of wheel hop/ bed shake. With the smaller disk it brought my rear end up 3/4” and when I load the bed down it’s hardly squatting. With the same load without this the nose of my truck would be sticking up. I don’t know if this is my fault from install or my fault for flexing my truck too much for this kit but I noticed after my first camping trip with this the part that bolts around the leaf blocks was bent and after further looking I found out that when I flex the truck enough that it makes contact with the sides of my bump stops. Both sides are bent and I followed the instructions and YouTube videos during install so I’m not sure how I could have messed up there. The road to my camp spot is pretty rough and has a lot of pot holes and articulation to get to it. And while I’m there I like to have fun with the truck so I’m wondering if I bottomed the rear out sometime and it bent the mount or what but it still works fine and went on another camping trip after that with no issues.

They do seem to help with Bunnyhop, on washboard Roads. They do help a little with side to side sway with my 2000 pound camper. If you have airbags, you may have to do some modification of The mounts which hold the airbags. That can be a lot of fun. Overall seems like a good product, and it’s made fairly beefy, easy to adjust.

My 2021 King Ranch PowerBoost has a max payload of 1316 lbs (very low for a new truck) and I needed more assurance towing our 2022 Rockwood Minilite 2509S. Rockwood Minites are notorious for heavy tongue weight (850lbs RAW for a 6360 lbs trailer). I am running an E2 WDH 10,000lb and even though the hitch height is perfectly set (before adjusting the bars and washer), there is quite a bit of read sag, almost to the bottom. Simply put, I needed more assurance for the rear axle weight and support than the 2 leaf springs FORD has decided to move to with their ‘Max Trailer Tow Package’ and #7350 GVWR package. I swapped out the FX4 front and rear shocks for FOX 2.0 Ford Tuned from TC Customs, upgraded the tires (275 60R20) to an E Load tire (295 60R20). Now with my tire PSI set at 60 cold (max is 80), I needed more safety. Enter the RAS. I talked to RAS support and with the YHD they said max space can be set to 2.5mm, or a nickel and a dime thickness, which I did. Install was very easy, the added bump stop relocaters are helpful as well since the 2021 has the auto level headlight sensors on the rear drivers side axle that the RAS would have had issues with for the bump stop. Now loading up my trailer, tongue weight and WDH fully set, my front and rear wheel wells are at 40 1/2 (even) and the front axle has gained 40lbs over unloaded weight. The rear is still holding 600-700lbs but with the RAS I am towing with confidence and control. I am also added Timbren SES in place of the Stock Bump Stop for added towing comfort and control. If you are driving a 2021 F150, I highly recommend you install the RAS even if your towing is light. Loaded and unloaded the driving, comfort and control is vastly improved. Highly recommend 10/10.

This is an awesome upgrade for the rear suspension. I was able to easily tow a 7500 lb trailer without a weight distribution hitch and the truck did not sag at all. Installation was relatively easy, though I do have experience. Took about an hour for 1 person plus a helper (which is very useful). My F150 is 2018 4x4 and has a solid cap on top and a decked drawer system holding tools etc. The truck was barely raked beforehand and now rides like it is empty. No rough riding whatsoever when not towing.

I didn't get a chance to try hauling my camper (28' Jayco) without these installed, so I can't truly compare them in that regard. But I can say that it did improve handling (less body roll in curves and corners, less wheel hop on wash boards) from the factory ride. Installed on 2023 Ford F-150 Tremor. I read multiple posts of people stating that a 28' camper is unmanageable with a half ton tow rig. I have not towed a huge amount, but I have towed with strong cross winds and poor pavement conditions (dips and varying grades) since installing this. My half ton handled everything well so far, and I believe the HD RAK system have made a huge difference to that. I have not experienced "porpoising" (front end of the truck bobbing up and down after going over a hump in the road) as many people with similar trucks have reported. NOTE. I do have a Husky Centerline sway and leveling tow hitch on my truck and trailer as well, and believe these 2 systems coupled together make all the difference in towing large campers with a half ton. I'm nowhere near my gross trailer weight rating (11,000 lbs) but I am near or at my payload capacity of 1640 lbs when trailer and family are loaded up.

Easy install. Delivers as quoted.

J’ai installé le RSA sur mon F-150 2020 et le produit offre stabilité et confort. L’installation est exactement conforme au spécification publiée. Ce donne une note de 100%.

Easy install and great results