1977-1991 GM ½ Ton 6" Rear Glide-Ride Leaf Spring (BDS001609)Features Provides a 6 inch lift height over stock springs for 1977 1991 Chevy and GMC ton trucks and SUVs Multi leaf progressive spring rate design for a smooth ride with any load Reduces axle wrap and creates a more controlled and stable feel Maintains factory payload weight ratings Engineered with a triple stage leaf spring design for outstanding ride quality and maximum hauling capacity Compatibility note: Designed for gasoline fuel type vehicles