GMC 3500 Sierra 1973 - 2010 HD Kit 2004 and traction bar at the

and traction bar at the fraction of the cost of other upgrades

RAS uses a variable-rate tension coil spring that attaches directly to your rear leaf springs

RoadActive Suspension HD strengthens your factory leaf spring suspension to improve stability

RAS® eliminates squat

GMC 3500 Sierra 1973 - 2010 HD Kit 2004 and traction bar at theGet 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 eliminates squat, excessive bounce and body roll without hassle or sacrificing comfort . This 3 in 1 system offers the