Upgrade with Bilstein 4600 Series Monotube Shocks! Bilstein’s 4600 shock absorbers are designed as a direct fit upgrade to original equipment shock absorbers on stock height light trucks and SUV’s. These shock absorbers feature a monotube design which provides consistent fade free performance. Bilstein’s 4600 shock absorbers utilize a unique, velocity sensitive, digressive piston which reacts to changing road conditions. All 4600 shock absorbers are tuned for each specific application to ensure optimal performance is achieved. Bilstein 4600 shock absorbers offer a significant improvement in ride quality, handling, and comfort. The 4600 product features include - optimum grip and enhanced lane stability in day to day and extreme situations, high gas pressure and a longer service life even when pulling trailers or driving off-road and enhanced safety. Driving dynamics is Bilstein's passion. Realizing the perfect driving behavior, building the perfect shock absorber; that is the motivation that drives them. Every day. And they have been doing so for around 70 years. Made in the USA or Germany. | Vehicle Compatibility: Fits 1987-1994 D21 and 1995-1997 Pickup.