(1) Made with a quality light weight high tensile strength aluminum 6061-T6 powerful use,Spring wire diameter 2.0mm is consistent with the original. (2) The damper shaft has thickened from 5.0mm to 6.0mm and smoothly polished to avoid bending. (3) Aluminum body with shock-absorb cap to seal tightly and avoid leaking. (4) L shape piggy back with built-in piston spring can adjust the rebound force, so the pressure load effect is better.