
The Clutch Masters FX350 high‑rev sprung clutch kit for 2015 Honda Civic Si 2.4L 6‑speed is supplied as a conversion kit that will not work with the OEM flywheel and is built to work exclusively with a Clutch Masters flywheel. The listing notes a FlashPro requirement; the kit is intended for drivers seeking higher rev engagement and a clutch assembly matched to Clutch Masters components.
Clutch Masters 2015 Honda Civic Si 2.4L 6spd FX350 High Rev Sprung Clutch Kit w/o FW *Req FlashPro