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When you drop a load in the bed or hook up a trailer, the rear shouldn’t sag and throw off your control. This RoadActive Suspension kit adds up to 3,000 lbs of support by converting your leaf springs into a mechanically active system. It automatically strengthens and adjusts to the weight so the truck stays level, steering stays tight, and braking feels confident even under heavy tongue weight or bed loads.
Sway and bounce can make towing or hauling stressful. Each RAS unit uses variable-rated coil tension springs that instantly react to weight transfer before sway or squat ever starts. The design eliminates axle wrap and wheel hop while reducing side-to-side body roll through curves or gusty winds. The result is a balanced, planted feel on the highway or back roads with no harsh ride when unloaded.
Once installed, there’s nothing to adjust or monitor. The RAS kit bolts directly under the factory leaf spring using the included brackets—no welding, drilling, or cutting required. The system comes fully assembled, tensions can be preset during installation with included spacers, and it stays maintenance-free for everyday use or long hauls.
Long days on salted roads or in wet conditions won’t slow it down. The heavy-duty alloy steel springs are epoxy e-coated for corrosion resistance, and the brackets carry a salt spray rating of more than 800 hours. By taking strain off your leaf springs, shocks, shackles, and tires, this setup helps extend component life while keeping your suspension strong mile after mile.
Customer Satisfaction Score:
91% were satisfied with this product
9% of customers were not satisfied
Ratings & Reviews
Paul
7/23/2025
It has worked out very well. Actually, better than I expected.
Jon G.
7/23/2025
Tracey T.
4/29/2022
After a year of use , these RoadMaster 3611-HD active suspensions are still the best addition to my trucks performance. The streets of Houston are brutal and these active suspension breeze through them. I have 354000 on this truck and if I ever get another, this Active Suspension will be the first addition. Hands down!
Keith
8/27/2023
Its been really wonderful. 10k 5er on my 07 2500hd classic ccsb and I can definitely notice an improvement in handling, including less porpoising. Towed it a couple times since, including a 7 hour drive. Very happy. I recently replaced the old wornout front bumpstops with sumo springs monsters and saw additional improvement. Neither hurts the unloaded ride, just better all around!
Robert
3/26/2026
Item continues to work well for what it was designed.
Lazer S.
3/26/2026
Bruce
4/29/2026
Still a two thumbs up! Keeps my load to the front, my steer tires on the ground, and my lights out of oncoming drivers’ eyes. Safe all around!
Bret
11/15/2025
I loved turn, but I traded trucks and now I cant use them anymore because of the overload springs on my 2025 Chevy 2500HD.
Gwendolyn Y.
6/3/2025
Knowing that your drive is safer is great to hear, Les! Are you towing a toy hauler, utility, camper?
Len
8/9/2025
Fine, but the product needs better rust resistance. Powder coating???
Nathan A.
11/17/2024
After numerous trips with the 5th wheel over the past year, along with some fully loaded solo trips, my opinion of the RAS system remains the same Fantastic! I highly recommend the RAS system. Wish I had had it years ago.
Gary
10/17/2024
These worked out very well, helped with stabilizing the 5th Wheel camper while pulling and did not cause a harsh ride while unloaded.
Dana
3/17/2025
still love it, working the same, makes the truck ride like it doesnt have 1100 pounds in the back.
Kate F.
3/17/2025
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Victoria H.
3/12/2025
That's awesome Michael! I'm glad these made a noticeable different in your ride quality. Thank for including your valuable insight with your feedback along with the photos! I know this will be very helpful information to someone gearing up to install these in the future!