The SPEC Stage 3 clutch kit listed for 2017–2018 Ford Focus RS MK3 2.3T specifies that the installation requires the matching SPEC flywheel SFFRSA-2. This Stage 3 kit is presented for high-capacity RS applications where the SPEC clutch and the referenced flywheel are used together to meet the vehicle's performance and drivetrain demands.
Spec 17-18 Ford Focus RS MK3 2.3T Stage 3 Clutch Kit (Requires Spec Flywheel SFFRSA-2)