






🚛 Elevate your haul game—ride stable, tow stronger, and never settle for less!
The RAS RoadActive Suspension 4611-HD is a heavy-duty rear leaf spring upgrade designed for Chevy/GMC 1500 trucks (1990-2022). It strengthens leaf springs by up to 50%, reduces rear squat by up to 3 inches, and combines helper spring, sway bar, and traction bar functions into one maintenance-free system. Engineered and assembled in North Carolina, this kit installs in under an hour and delivers unmatched ride quality and towing stability without stiff suspension trade-offs.


| Manufacturer | RAS |
| Brand | RAS |
| Package Dimensions | 78.74 x 25.02 x 13.97 cm; 13.58 kg |
| Item model number | 4611-HD |
| Manufacturer Part Number | 4611-HD |
| Position | Rear |
| Item Weight | 13.6 Kilograms |
J**M
Put this on a 2020 Silverado 1500 Custom Trail Boss. Double Cab, 4.3, 6L80, 4x4. To preface, all hardware comes loosely installed. I had no missing parts. It’s worth the money if you don’t want to go with helper bags. It’s a poor man’s overload spring and is worth every penny. No squat. If you’re towing ANY kind of trailer, especially with the trail boss suspension, buy it. If you don’t have a sway bar, buy it. If you DO have a sway bar. Buy it. First off, this was extremely easy to install. The instructions were clear and concise. I was done in 30 minutes. Ride quality with no trailer is unaffected (weird, but I’ve put thousands of miles on this truck since install), and the rear ride height was raised by 1”. Even hauling a single axle enclosed trailer, you can tell the difference. It’s soft when you need it to be. It doesn’t squat under load. It does the job it’s intended for, and does it extremely well. I combined this with the Hellwig sway bar kit, and let me tell you…Chevrolet needs to pay attention and take notes.
D**A
RAS has been installed, so far everything is excellent. No more air bag hassles. RAS is maintenance free.
B**T
I bought these in place of air bags that I was looking at. Im very happy with the results, especially at a third of the cost. Took about 1 hour to install with not hitting it hard. Takes a little to get used to adjusting but it's very easy to do.
M**L
Arrived quickly and came with a sticker! Installed these on my 05 Silverado 1500HD. They were easy to install in a short amount of time with minimal tools. They lifted the truck a good bit in the rear with them on the 40% setting but not complaining because it sits perfectly level. Unloaded ride quality is great, truck rides smooth and handles well in corners and it has less sway than before. Im excited to see what happens when we load up the camper and the car hauler.
T**.
The road active suspension was easy to install and it made the world of difference when I hooked onto my travel trailer to my half ton pick up truck you can set it in two settings, stiff or medium. The ride of the vehicle is so much smoother.
Trustpilot
2 days ago
2 weeks ago