BILSTEIN Shock Absorbers for Drag Racing are built using BILSTEINs famous monotube gas pressure construction, initial quarter-mile tests produced 3-tenths faster e.t.s, a substantial improvement just by changing shock absorbers. The gas pressure pre-load increases launch control and grip for improved consistency and removes front suspension lag on launch off the starting line. Plus, the self-adjusting deflective disc valving design instantly adjusts to the shaft speed of the shock for better down track stability. As an additional benefit, BILSTEIN Drag Shocks mount in the stock location for easy direct-fit installation.