Shock Absorber Type 643 Competition P65With expansion reservoir on a milled mount. The reservoir bracket is CNC milled from solid aluminum and houses the high and low speed compression adjusters. A pressure relief valve prevents hydraulic blocking and protects the chassis from impact loads. As with all of our Competition shocks, both low and high speed compression offer 22 clicks of adjustment. Rebound damping is also 22 way adjustable via a convenient lower adjuster wheel. Top grade