R2 Performance Package | W204 | C 63 AMG Black Series | 554 HP / 523 LB-FT | 6.3L V8 N/A | M156 mercedes-benz-sl-class--231---2012-2016--sl-550-biturbo-esr8160914 which is demonstrated in its

which is demonstrated in its ceramic composite brakes

450 LB-FT @ 2

Transmission Control Unit (TCU) -upgrade is engineered for faster and more firm shifts while increasing the torque capacity of the AMG SPEEDSHIFT DCT 7G transmission

335i Limousine

R2 Performance Package | W204 | C 63 AMG Black Series | 554 HP / 523 LB-FT | 6.3L V8 N/A | M156 mercedes-benz-sl-class--231---2012-2016--sl-550-biturbo-esr8160914 which is demonstrated in itsR2 Performance Package for 204 C 63 AMG Black Series. Includes ECU Upgrade, Carbon Fiber Air Box, Upgraded Throttle Body and Stainless Steel Headers. Up to 554HP and 523LB FT. RENNtech performance package 2 includes our proprietary ECU tune in addition to our full carbon fiber airbox, 82mm throttle body kit and RENNtech stainless steel headers for a gain of +44 HP and +66 TQ over stock. Performance Package 2 Includes: RENNtech ECU Upgrade Full Carbon