XClutch Stage 4 Twin Organic Clutch Kit | Ford Mustang EcoBoost (XKFD23697-2A)2015 2023 Ford Mustang EcoBoost Twin Solid Organic Clutch Kit by XClutch The XClutch 9" range of twin organic disc kits are designed for high horsepower street vehicles that require very high torque capacity but also modulation for street applications. Features Alignment Tool Included: Yes Clamping Force % Increase: N A Clutch Disc Diameter: 9. 055 in. Clutch Slave Cylinder Included: Yes Disc Material: Organic Disc Type Sprung Solid: Sprung Flywheel