At Kleemann, our engineers have always developed engine upgrades based on a very simple philosophy: Obtain the best possible engine performance from a simple and price worthy upgrade without sacrificing the factory reliability and drivability.

For the high-revving M156 63 AMG engine, this has resulted in 2 different power upgrade options: one that keeps the engine naturally aspirated, and another built upon the M156 Kleemann Kompressor System.

63 AMG (M156) N/A

63-K1: ECU tuning. Up to 540 HP and 650 Nm (481 lb-ft) of torque.

63-K2: K1 + long-tube stainless steel tubular exhaust headers and downpipes, fits E, CLS, S, CL, SL, ML and R class front catalyst delete, (LHD cars only). Up to 575 HP and 720 Nm (533 lb-ft) of torque.

63-K3: K2 + twin 80 mm throttle system and a set of high low air filters. Up to 590 HP and 730 Nm (541 lb-ft) of torque.

63 AMG (M156) KSS
63-K1S: Kleemann Kompressor System. Up to 680 HP and 850 Nm (630 lb-ft) of torque.

63-K2S: K1 + a set of long-tube stainless steel tubular exhaust headers, fits E, CLS, S, CL, SL, ML and R class front cat delete, (LHD cars only). Up to 715 HP and 910 Nm (674 lb-ft) of torque.

For all C63 AMG variations, our long tube, stainless steel tubular exhaust headers and downpipes are available in both LHD and RHD versions. Down pipes are available with or without catalysts. Our mid-muffler section features flow through mufflers, with resonator or X-pipe. Partial or complete systems can be configured for a sound level that suits your preference.