RadiusCX, RadiusX, and Core EXP 3.0 for hydraulically actuated models feature an adjustable slave cylinder, which allows for quick external adjustment using a 4mm Allen key. This adjustment moves the throw-out rod, which in turn lifts the pressure plate off the clutch pack, providing the auto clutch’s installed gap. The installed gap is the space between the clutch pack and pressure plate that gives the auto clutch its auto functionality. The slave cylinder features a hard anodized billet housing, increasing the durability over OEM.