Acura RSX Clutch Master, Slave Cylinder and Braided Line Kit

This kit replaces the whole clutch hydraulic system on a K-series Honda or Acura: a master cylinder, an external slave cylinder and a braided hydraulic line with AN-style end fittings that runs straight from the master to the slave. It is a replacement for the K-Tuned KTD-CLK-KMS kit.

Listed fitment: 2002-2006 Acura RSX (DC5), 2004-2008 Acura TSX, 2002-2005 Civic Si (EP3) and 2006-2011 Civic Si (FG2/FA5). The listing says 2012-2015 Civic Si needs the pedal clevis swapped over.

The braided line replaces the factory hard line and the clutch damper, so pedal feel is more direct and the delay between the pedal and clutch engagement is gone. It is a common upgrade when doing a clutch on these cars, and a good fix when an old master or slave has started to leak.

Signs the clutch hydraulics are failing: the pedal sinks slowly to the floor or stays down, the pedal feels soft or spongy, the reservoir level keeps dropping, fluid is wet on the firewall or the bottom of the bellhousing, or it grinds going into gear because the clutch no longer releases all the way. If bleeding brings the pedal back for a day and then it goes soft again, a seal is leaking and the part needs replacing, not more bleeding.

To install, pull the old master from the firewall and the slave from the transmission, then route the new line away from the exhaust and any moving parts. Bleed at the slave until the pedal is firm, and check that the clutch fully releases with the engine running before driving.