American Prime Manufacturing Inc. brings you their small and sexy 9/16" bore chrome handlebar control kit. This kit complies with 1" handlebars. These kits include brake side with master cylinder, mirror stem, and clutch side for cable actuated clutch.; ; 9/16" Master Cylinder Bore Kit includes brake side with master cylinder, mirror stem, and clutch side for cable actuated clutch Polished finish For 1" handlebars 2.01 lbs