The new Alpina B4 Bi-Turbo is the BMW 435i as the basis of the building, Subaru Crankshaft offers a new appearance package, aluminum ring with a beautiful interior.
 
Alpina reserves the BMW 435i original bright appearance, just in front of the lower part of the installation under the duck tail spoiler and the rear, so that the original shape becomes more simple level, the other with four tailpipes and export 20-inch aluminum wheels, creating a strong fighting spirit. Dynamic part of the engine through the Alpina retuned, with 410hp (original 306hp) maximum horsepower and 61.2kgm (original 40.8kgm) maximum torque, with 8-speed automatic transmission system, 0-100km / h acceleration takes only 4.2 seconds a top speed of up to 305km / h.
 
Alpina B4 Bi-Turbo conversion set can improve handling performance and to maintain comfort shock absorbers, and have electronic adjustment function, especially that can be linked with the original Drive Performance Control system, improve convenience of use. Finally, high-output engine should have sufficient braking performance, modification of the front of the four, Audi A3 turbocharger after two multi-piston calipers, coupled with the former diameter 370mm, 345mm rear disc.