The SPEC steel flywheel is a direct‑fit replacement for select BMW applications, listed for 2015–2020 M240, M340, and M440 models. This steel flywheel provides a conventional replacement option for clutch and driveline service or upgrades where a factory‑style rotating assembly is preferred. It installs in place of the stock flywheel and is intended for the specified BMW model years and applications.
Spec 15-20 BMW M240/M340/M440 Steel Flywheel