Aldan American has developed the 500 Series coil-over shock as a non-adjustable shock. These shocks are designed as a solution for builders looking for a bolt-in and go installation for their hot rod, classic truck or custom ride. The 500 Series was featured in Classic Trucks Magazine and is an excellent choice for street use or as a limited budget shock. The 500 series maintains the same Aldan American superior quality you expect, just less the adjustability feature.