Sport Auto's Christian Gebhardt has conducted a top speed test with the CLS 63 AMG-based Carlsson CK63 RS.
During his test he managed to hit a top speed of 333 km/h (207 mph) with the custom CLS 63 AMG fitted with THE Performance Package. While the regular version sprints to 62 mph (100 km/h) in 4.3 seconds, the Carlsson-tuned variant does it in just 4.1 seconds.
Power was increased from 557 HP (410 kW) to 652 HP (479 kW) and a carbon fiber aerodynamic kit was added, including a front spoiler, RS front spoiler lip, rear boot-lid spoiler, RS rear diffuser, rear skirt insert and black-colored stainless steel grille inserts.
It also has a stainless steel sport exhaust system with four oval pipes and an adjustable suspension kit that lowers the CLS 63 AMG by up to 30 mm. Various wheel styles are available in sizes of up to 20 inches.
More details in the related link below.