Ford Raptor 2015 - 2021 HD Kit 1978 This keeps the leaf springs

This keeps the leaf springs in an upright bowed position to prevent sag

Set it once—done

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

Beware of cheap knockoffs -- trust the original

Ford Raptor 2015 - 2021 HD Kit 1978 This keeps the leaf springsGet 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