Patented single-tube design for the best performance
Bilstein® HD Series shock performs better and longer than any other car shockThe best from a world leader in gas shock technology! 98% efficient after 100,000 miles! 360 psi gas charge eliminates foaming and fade. Seamless tubing is virtually leakproof. Hand assembled and dyno tested. Huge 1.81" diameter piston for a giant work area.