BRABUS extra power for your vehicle: The BRABUS PowerXtra B53-500 performance kit based on the CLS 53 AMG consists of a processor-driven auxiliary control module for the engine control unit. In addition to a bump in peak torque from 520 Nm to 590 Nm, the rated output jumps by 48 kW/65 hp from 320 kW/435 hp to 368 kW/500 hp. The plug-and-play control unit is adapted to the production electronics.