Straight out of the box the Mercedes Benz SL63 AMG is already one of the sportiest models in the carmaker’s lineup, but the car’s heady 525hp (392kW) output was never going to satisfy the guys at German tuner Carlsson. Applying lessons learned from its previous CK50 kit based on the SL500/550 the tuner has upgraded the 6.2L V8 engine to the tune of 600hp (448kW) and 520lb-ft (705Nm) of torque, lifting performance of the SL63 into supercar territory.

The 0-100km/h sprint takes just 4.1 seconds (0.4 seconds faster than the standard SL63), with 200km/h passing in 14.2 seconds and momentum finally succumbing at an electronically controlled top speed of 325km/h.

A fully integrated aerodynamic package gives off a menacing appearance, while being completely functional, and can be adapted to all current SL models. All additions are available in high-quality carbon-fiber, including the unique front apron that reduces lift on the front axle and allows for improved cooling of the engine. The wheels measure 20in in diameter and are fitted with Dunlop SP SportMaxx tires.

Up back sits a new rear diffuser housing sports exhaust tailpipes, shaded rear lights and a unique boot lid. Inside, Carlsson added a sports steering wheel with carbon gearshift paddles, additional instruments and extra carbon trim. One interesting mod is the scissor style doors, an option not usually applied to Mercedes cars.

Pricing for the package starts at €272,500.

Carlsson CK63 RS based on the Mercedes Benz SL63 AMG