GMC 3500 Sierra 1973 - 2010 HD Kit 2004 Kit includes an easy to

Kit includes an easy to install RAS Standard Duty Spring for each rear leaf spring

compressors

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

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

GMC 3500 Sierra 1973 - 2010 HD Kit 2004 Kit includes an easy toGet 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