G-Power continues to do wonders for the BMW M6 Gran Coupe. Because of its work on the model, it’s not surprising that the German tuner jumped at the chance to work on another M6 Gran Coupe.

The tuning firm’s new Bi-Tronik 5 system is a step up from the Bi-Tronic-III V2 kit that we previously saw on the M6 Gran Coupe back in 2013. Part of that "step up" is a noticeable bump in output that should ring music to the ears of M6 Gran Coupe owners. All the cursory modifications are also there, including upgrades for the wheels, brakes, and suspension system.[...]