K-Tuned CMC Remote Mount Reservoir W/ 4AN Fitting - KTD-CMC-R4AApplication: Remote Mounted Reservoir Note: * Available in three sizes. 1 4" Hose, 3AN, or 4AN K Tuned CMC Reservoir is a direct replacement for your remote mounted Reservoir. Machined from 6061 aluminum. 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