German BMW tuner Alpina recently unveiled the 2014 BMW Alpina B4 Bi-Turbo Coupe at the Tokyo Motor Show. The coupe is powered by a twin-turbocharged version of the 435i’s 3.0-liter straight-six engine, producing 410 ponies and 443 lb-ft of torque. Capable of a 0-62 mph sprint in just 4.2 seconds, the B4 is capable of reaching an eye-watering top speed of 189 mph. Additional details include quad exhaust, 20″ wheels, high-performance brakes, lavalina leather-lined interior, and a 31 mpg rating. The 2014 BMW Alpina B4 Bi-Turbo Coupe will be available beginning May, 2014 starting at approximately $78,102 USD.