XClutch Stage 1 Single Sprung Organic Clutch Kit | 2001-2003 Subaru Outback AWD EZ30D (XKSU24005-1A)2001 2003 Subaru Outback AWD EZ30D Stage 1 Single Sprung Organic Clutch Kit by XClutch XClutch Stage 1 organic upgrades have been designed for performance street applications where driveability is critical. All Stage 1 clutch kits utilise an organic friction material which offers the best driveability in the range. The discs are available in a wide variety of configurations including sprung, rigid and steel backed depending on the specific vehicle.