GMC 1500 Sierra Denali 2015 – 2018
GMC 1500 Sierra Denali 2015 – 2018
GMC 1500 Sierra Denali 2015 – 2018
GMC 1500 Sierra Denali 2015 – 2018
GMC 1500 Sierra Denali 2015 – 2018

GMC 1500 Sierra Denali 2015 – 2018

SKU: 2611

Regular price$539.00
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Fitment

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This RoadActive Suspension kit includes an RAS Standard Duty Spring for each rear leaf spring. RoadActive Suspension kits are designed to strengthen the rear leaf springs for towing or hauling without negatively affecting unloaded ride quality. This kit will reduce rear bounce and squat when loaded while significantly improving stability, handling and performance at all times. Estimated install time is 2-2.5 hours.

 

RoadActive Suspension provides a 30 day money back guarantee, from date of purchase. However should the kit be returned, it must be re packed in the original packaging with all components included. On orders with free shipping (where shipping was paid for by RoadActive Suspension), refunds will reflect the invoiced amount, minus that shipping cost billed to us by our shipping provider. In addition, the customer will be responsible for the return freight charges.

It works with your suspension — not against it.

Each kit is tailored to your specific vehicle

RoadActive Suspension is uniquely assembled for your model and typically ships within 1-2 business days! RoadActive Suspension is the only suspension upgrade on the market that adds strength to your rear suspension, provides same as or better than stock unloaded ride quality and doesn’t require readjustments or maintenance.

Each RAS kit comes fully assembled out of the box and ready for installation. Follow your application guide that is in the box and you will be ready to test your RoadActive Suspension after an installation as simple as 45 minutes! If you are not satisfied with your RoadActive suspension we offer a money back guarantee.

Reduce Rear Squat & Bounce

Improve Stability

Improve Roadhandling & Stability

Make RVing Safer

Reduce Axle Wrap

No Readjustments or Maintenance

We already know what you're going to ask.

No, installing RoadActive Suspension (or any other rear suspension helper) does not automatically void the factory warranty. The Magnuson Moss Act states that it is illegal for a vehicle manufactuer or dealership to void a warranty just because a part has been installed. The manufacturer or dealership may only void the warranty if they are able to prove the aftermarket part caused or contributed damage to the vehicle. Even then, warranty to the impacted component(s) is the only portion of the warranty that may be voided. In this case, all other parts of the vehicle remain under warranty.

RAS uses a variable-rate tension coil spring that attaches directly to your rear leaf springs. It works like a muscle, progressively engaging as load or force is applied. This keeps the leaf springs in an upright bowed position to prevent sag, improve stability, and enhance bounce isolation.

Most applications see a 2–3" reduction in rear squat. The exact amount will depend on multiple factors such as vehicle size, load size, load placement, leaf spring condition, and the tension setting of the RAS.

Expect same-as or better-than-stock unloaded ride with less bounce and more control.

Yes — in as little as 45–60 minutes with jack stands and hand tools. No drilling, no air lines, no maintenance.

Airbags add complexity, cost, and ongoing maintenance. Other helper springs only address sag and can compromise ride comfort.RAS is 3-in-1:it controls squat, reduces sway, and improves traction — all with zero maintenance.

Customer Reviews

Overall rating: 4.0 / 5 from 5 reviews.

Customer photo review of GMC 1500 Sierra Denali 2015 – 2018

As advertised! Easy install and does exactly what it says it will do. Eliminated load sag and as a result better overall towing experience. Completed my install with a 2" leveling kit up front. Works good and looks good.

GMC 1500 Sierra Denali 2015 – 2018

Product is excellent. On my lifted 2016 Sierra Denali the installation was a bit more difficult than what is shown in most of the videos due to having to pull the top spring bracket off for placement of the RAS base mount. This base is different on the 2611 kit than what is in most of the pictures because the Denali has a ride height sensor that needs to be avoided and sits close to the leaf springs. No fault of the product, just more than I expected to take on. Fully installed the bed is raised and additional 1.5" using the black spacer. The drive unloaded seems noticeably more connected to the road.

GMC 1500 Sierra Denali 2015 – 2018

I like the idea. I have installed the 2611 on my 2018 GMC 1500 Sierra Denali. While not technically hard, it's probably 100x harder than typical RAS systems because in order to accommodate the Magnaride hardware, the typical RAS leaf-spring bracket is replaced by a flat bracket which must be installed on top of the leaf springs; and this requires dropping the axle. Not only that, when I had everything back together, my truck pulled to the left a bit. I was able to loosen the axle U-bolts and adjust it...and got it back in line. But to be sure, the axle has enough wiggle-room so that your alignment can be off after installation. As to performance, it raised my rear a bit (but I've got it set mid-range tension) but I haven't noticed any degradation in ride over 500 miles. I think I may add a 2" leveling kit to the front. I bought this to help with rear sag when towing an Airstream; but I haven't really put it to the test yet. Like I said, I like the idea. Pretty cool. But buyer beware: the "easy-as-pie" general instructions for RAS do not apply to the 2611.

GMC 1500 Sierra Denali 2015 – 2018

Didn't work for me. My 2017 GMC Sierra Denali 1500 would squat 2.5in before install when connecting small 2 horse trailer and after install it still squats 2.5in. It raised the rear of the truck .75in, but squats 2.5in when trailer is hooked up. Very disappointed. Wish I would have skipped the Road Active Suspension install & installed Air Lift air bags instead.

GMC 1500 Sierra Denali 2015 – 2018