The BMW M4 is a high-performance version of the BMW 4 Series coupes and convertibles developed by BMW's motorsport division, BMW M.
As part of the renumbering that splits the 3 Series coupé and convertible models from the 4 Series (to further differentiate it from the 3 Series), the M4 replaced the BMW M3 coupé and convertible models. Upgrades over the standard BMW 4-Series include an upgraded engine, suspension, brakes and weight reduction measures including increased use of carbon fiber, such as on the roof of the car.
Many of the Ultra Racing BMW product were designed at our sister-company in Korea. Ultra Racing Korea.