These V8 clutch kits cannot be used with the original dual mass flywheel. 2011-2017 Ford Mustang 3.7L. The hub is double sprung on single mass flywheel applications if your vehicle has a dual mass, or if this clutch is designed to work with dual mass flywheels, the hub is not sprung to prevent competing inirtia with spring cover relieves for flexibility and heat treated components for strength and durability
