Strengthened leaf springs by up to 50 percent for improved load handling and stability
3-in-1 system combines helper spring, sway bar, and traction bar for comprehensive suspension control
Quick 1-hour installation with no drilling, tools, or maintenance required
Reduces rear squat, excessive bounce, and body roll for a smoother, more controlled ride
Maintains or improves unloaded ride quality without sacrificing comfort
Summarized by Shop
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 more smooth, controlled ride at all times.
Unlike other suspension upgrades that need constant adjustments & maintenance or negatively impact unloaded ride, RAS® g
Compatible Vehicles
GMC 1500 Sierra 1990-2024 (except 2022-2024 with single leaf spring)
Placement
Rear
Color
Black, Gold
Item Condition
New
Manufacturer Type
Aftermarket, OEM
Pattern
Solid
Vehicle Suspension Features
Coil spring, Hardware included, Strut mount
Summarized by Shop
4.7
170 ratings
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I have a 2016 GMC SLT 4x4 with a 2.5" front spacer lift and RAS in back. I tow a steel frame enclosed 24' car hauler and with 4 guys and a race car, the tounge stays level and the ride is safer and smoother with RAS installed. A jack, two heavy duty jack stands, and its a 45 min job. The first side is learning, the other side goes on quickly. Tightening them is simple using the shims. Watch a few installation videos prior. Also helps overall with porpoising, or bouncing, seems to dampen that out better too.
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Andy · 7 days ago
The amount of sag on my GMC 1500 diesel was crazy.... these reduced it to about 2.5" from at least double that. Drove over 800 miles.... worked as advertised. Buy it.
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Kenneth · 15 days ago
Just put my 3rd set of these on my new truck, a 2023 GMC AT4 and it totally changes how the truck drives and handles everyday, let alone how it tows. They will be on every truck I ever buy!