Shock Absorber Type 642 CompetitionThe nonplus ultra concerning motorcycle shock absorbers! The upper mount consists of a milled part. It serves as a connection to the compression tank and houses the setup screws for the high and low speed areas of compression adjustment. With 22 clicks each they can be optimally tuned to your requirements! At maximum compression speed a pressure relief valve prevents the shock from hydraulic blocking and fends off uncontrolled jolts to the suspension.