Hartge announced details of its first crack at upgrading the BMW 6 Series Gran Coupe. This package concerns 640i and 640d models, and provides them with a fresh set of wheels, new exhausts, uprated suspension, and a few more ponies.

The 640i Gran Coupe is boosted from 320 hp and 450 nm to a respectable 367 hp and 520 nm of torque. As for the 640d diesel, it gets a bump from 313 hp to 362 hp, and from 630 to 730 nm of torque.

The new exhaust system Hartge puts on this car, featuring dual 80mm tailpipes, joins forces with a revised air intake system to not only increase the output, also give the car a nicer soundtrack.

The tuner then gets busy with the suspension, dropping the Gran Coupe by up to 30mm, before bolting on their signature wheels. Other changes include new floor mats, aluminum pedals, and a couple of Hartge badges.