Two new colour options are available for the exterior, those being Fire Orange and Grigio Medio with black accents. A matte wrap is available as an option. The car is available with 20-inch classic Alpina multi-spoke alloy wheels in Ferric Gray finish.
The Edition 99 has a stiffer suspension system than the B4 S called the Alpina Sports Suspension Plus along with modified adjustable dampers. A limited slip differential and a torque vectoring system is available as an option. The interior features piano black lacquer trim with "Edition" lettering, new sports seats, the shift paddles finished in matte black and a stainless steel plaque signifying the production number of the car out of the 99 units produced.