The engineers at AC Schnitzer have picked up where the guys at BMW M have left off. They have brought goodies to the market that make the M3 and M4 even more powerful, agile and stylish. Power output is up from 25 hp and 406 lb-ft to a much satisfying 503 hp and 476 lb-ft (which even bests the BMW M4 GTS with it’s mere 493 hp and 442 lb-ft). Added suspension options provide lower stance. The simple way out with a spring upgrade lowers the front and rear by about 1 inch and 0.5 inches. Second because they know you want more … is an adjustable coilover suspension that lowers up to 1.6 inches and 1.2 inches. There are also a variety of aerodynamic bits that help give the car the look. Winglets, front spoilers, rear spoilers are all available as a package or individually to suit your needs.