Genuine Mini and Moke Verto clutch slave cylinder AP from original tooling. The latest model Minis have a different design clutch and thus a unique clutch slave cylinder. The cylinder mounts more vertical than horizontal and even looks a little strange. The Mini clutch slave cylinder is a vital link in the proper operation of the Mini clutch. The master cylinder feeds the slave cylinder to exert the mechanical pressure to dis-engage the clutch. The simple sounding process is only complicated by a worn cylinder. As the wear continues it first will probably bypass, this will mean that the clutch will not stay dis-engaged when holding the pedal down. The next more obvious sign is when you see actual fluid leaking. The slave cylinders are easy to replace.