Description: If one of either the clutch master or clutch slave cylinders fitted to your car is showing signs of leakage it will normally need to be replaced. Successful rebuilding is often difficult because the housings are made of aluminium and therefore more subject to internal scoring than cast iron cylinders. Furthermore, if you replace just one of the 2 cylinders, the extra pressure generated by new seals and bore in the one cylinder will often find weak spots in the other cylinder. For this reason, CVI has recently put together this well-priced clutch hydraulics kit which includes all of the items in the hydraulic system most prone to wear and tear.