Dubbed the BMW LW M4, German tuner Lightweight has introduced an upgrade program that – unsurprisingly – strips the M4 of some weight, while boosting output to 520 hp and 479 lb-ft of torque. Specialists in titanium exhaust systems, Lightweight added one of its custom exhausts to the hi-po coupe, as well as a carbon-fiber adjustable front spoiler blade, rear wing and diffuser. Uprated brakes, a set of 19-inch BBS alloys, and a Bilstein Clubsport suspension rounds off the chassis upgrades, while the interior boasts a safety cage, bucket seats and six-point harnesses.