Get the best of both worlds with this authentic RAS® Heavy Duty RoadActive Suspension kit — the only solution that strengthens leaf springs by up to 50% while providing a smoother, more controlled ride at all times.
Specifically engineered for the 2025 Chevy Silverado 1500 and GMC Sierra 1500, this latest RAS® model (Part #5611-TZHD) is built to complement the new rear suspension design — delivering unmatched load stability, squat reduction, and ride quality improvement.
Unlike other suspension upgrades that need constant adjustments & maintenance or negatively impact unloaded ride, RAS® greatly reduces squat, excessive bounce, and body roll — without hassle or sacrificing comfort.
This 3-in-1 system offers the benefits of a helper spring, sway bar, and traction bar at a fraction of the cost of other upgrades. With a quick 1-hour installation and zero maintenance, it's the simplest, most effective way to reduce squat and improve your truck's towing and hauling performance. Tried and true since 1998.
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.
Benefits
- Reduce Rear Squat & Bounce
- Improve Stability
- Improve Roadhandling & Stability
- Make RVing Safer
- Reduce Axle Wrap
- No Readjustments or Maintenance
Warranty Information
RoadActive Suspension kits are warranted for 5 (five) years from date of purchase, against defective components and materials. However, kits cannot be warranted if any changes or modifications have been made to any rear leaf spring suspension components on the vehicle you intend installing the kit on.
If you would like to complete our online Warranty Registration, please click here.
Return Policy
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.