B8 5125 Suspension Shock Absorber 1988 nissan d21 xe esi9543382 CNC machined differential drop spacers lower Pirelli P Zero All CNC machined differential drop spacers lower the differential for safe factory angle on 4WD models (not used on 2WD) the rear system also includes steel rear upper shock mount extensions designed to keep the rear shock in the stock position and length which results in a factory ride and no need to buy new shocks The shock absorbers feature a 46mm piston with self adjusting deflective disc valving Bilstein B8 5125 shock absorbers are designed for custom applications and are a perfect solution for vehicles that do not have a direct Bilstein fitment