You no longer need to get an S2000 CMC and adapter to have the reservoir mounted directly on your master. The reservoir removes the stock line and remote mounted reservoir. Using a custom fitting and double seal the aluminum reservoir is mounted right to the CMC similar to the S2000 style. Machined from 6061 aluminum it offers the same volume as OEM. The double o-ring seal ensures no chance of leak. The diaphragm allows fluid movement without letting air interact with brake fluid. This is crucial as brake fluid is hygroscopic (absorbs water from the air) which can cause premature clutch fatigue and overheating.