The ACT SB11-HDR4 clutch kit for the Subaru WRX 2006+, including the new 2015+ FA20DIT WRX, is a full replacement system for your WRX clutch setup. It includes the flywheel as well as all other components to make install a breeze. The kit features a heavy duty pressure plate which grabs harder than stock, allowing it to hold more power than stock without slipping. This kit also comes with a solid 4 pad, segmented disc which is almost exclusively a race/track style disc. It will engage very quickly and abruptly in between shifts but will perform very well in high performance scenarios. To finish off the full kit, the alignment tool and a new release bearing/throwout bearing are included in the Subaru WRX clutch kit.