XClutch Stage 2R Ceramic Race Disc Clutch Kit | Honda Civic SiR 1.6L B16A (XKHN22003-1R)1989 1991 Honda Civic SiR 1. 6L B16A Stage 2R Single Ceramic Race Disc Clutch Kit The XClutch Stage 2R range is designed around the XClutch extra heavy duty pressure plate. These kits offer increased clamping force over the standard stage 2 equivalents for motorsport applications requiring extra torque capacity. Like the standard stage 2 kits, the Stage 2R range includes a ceramic friction disc for high heat capacity and is recommended for motorsport