The B-Tuned Slave Cylinder is a great upgrade for those wanting to replace leaking,worn out, or just ugly OEM units. The B-Series slave cylinder is cast aluminum and will not corrode like OEM. It is a great upgrade for an old tired unit that can quickly become corroded or leak. Steel piston is used to ensure the product will last and not leak. The best part of it is the relocated bleeder which will help on turbo cars. The stock bleeder often becomes a problem with downpipes and makes bleeding the clutch system very difficult.