Many times when you replace your clutch, you find out the one or both of the hydraulic cylinders are bad and leaking as well. Another culprit is the flexible line going between the hard line on the firewall to the slave cylinder - it wears out and leaks causing the clutch to not fully disengage and gears to grind. Replace that leaky worn out hose with a stainless steel braided line. Not only will it have more longevity, but it will hold the clutch line pressure better by not expanding like rubber hoses tend to. Available in Clear-coated Silver, Red, Blue, Black, and Yellow.
NOTE: Slave cylinder NOT included. Those are listed here.