Check out this world’s first M140i B58 with a 4-inch turbo-back semi-oval exhaust system hitting the road. Everything is designed and built on the DKU Performance platform. Stay tuned, as the work has not been completed yet. Watch till the end to enjoy the loud sound this vehicle is producing after getting its custom job done by our skilled engineers. This sounds as cool and impressive as our valuable client did. At DKU Performance, we custom designed and built high-quality exhaust systems for all types of vehicles. Our exhausts range from the turbo-back exhaust system to the cat-back performance exhaust system.