One issue with the factory BMW DCT setup is the incredibly heavy dual-mass flywheel. There is no clutch so the rotating mass stays pretty minimal overall, but we noticed there was definitely room for improvement.
Fits: BMW M2 (F87), BMW M4 (F82/F83), BMW M3 (F80), BMW 135i/335i/535i (N54), BMW 335i/335is (N55). Confirm fitment with us before ordering.