The Bilstein 33-061399 5100 Series Shock AbsorberÂ is designed as a direct fit upgrade for your 1988-2000 GM K2500/K3500 4WD. This shock absorber features a monotube design which provides consistent fade free performance. B8 5100 shock absorbers utilize a unique, velocity sensitive, digressive piston which reacts to changing road conditions. All B8 5100 shock absorbers are tuned for each specific application to assure optimal performance is achieved. B8 5100 shock absorbers offer a significant improvement in ride quality, handling, and comfort. Specifications: Series: B8 5100 Drive Type: 4WD Position: Front Descriptor: For Front Lifted Height: 4"-6" Quantity Per Vehicle: 2 (Sold Individually) Finish: Zinc Plated Body Design: 46mm ID Smooth Body (Non-Coilover) Reservoir: No Measurements: Collapsed Length (IN): 14.37 Extended Length (IN): 22.78 Collapsed Length (MM): 365 Extended Length (MM): 578.5 Applications: Chevrolet Blazer 1994-1992 K1500 1999-1988 K1500 Suburban 1999-1992 K2500 2000-1988 K2500 Suburban 1999-1992 K3500 1999-1988 Tahoe 1999-1995 GMC K1500 1999-1988 K1500 Suburban 1999-1992 K2500 2000-1988 K2500 Suburban 1999-1992 K3500 1999-1988 Yukon 1999-1992 Note:Â Lift Height is suggested by mfg. Due to the many different aftermarket suspension systems it is recommended that a measurement is taken for proper application. An eye to eye shock is measured from the center of one eyelet to the center of the other eyelet. Shock Absorbers sold individually.