The BMW M4 is one of the most modified cars of current times and many companies offer aftermarket visual parts and mechanical modifications for its engine, but in my opinion the body kit of Liberty Walk is the best body kit for the car. The M4 is equipped with a 3 liter six cylinder engine producing 425 hp and 550 Nm of torque, that enables it to do the 0-100 km/h in 4.1 seconds. In the video below you will be able to hear the car when it is equipped with an Armytrix OBD2 Valved Exhaust.
