RENNtech ECU Upgrade | C218 | CLS 63 S AMG 4MATIC | 638 HP / 695 LB-FT | M157 | 5.5L V8 BiTurbo | MY2015-2018 mercedes-benz-cls-class--219---2006-2011--cls-500-esr9637543 For GT Roadster: SKU: 88

For GT Roadster: SKU: 88

RENNtech Performance Series | Forged Wheels | Set of 2 Front and 2 Rear | Front: 23" x 10

Made of high quality pre-preg carbon fiber

dealer charges

utilizing the existing integrated catalytic convertors

RENNtech ECU Upgrade | C218 | CLS 63 S AMG 4MATIC | 638 HP / 695 LB-FT | M157 | 5.5L V8 BiTurbo | MY2015-2018 mercedes-benz-cls-class--219---2006-2011--cls-500-esr9637543 For GT Roadster: SKU: 88ECU Upgrade Up to 638HP 695LB FT Gains: +33HP & +49LB FT RENNtech M157 Biturbo ECU+ Upgrades are TV approved! Our intermediate level ECU+ upgrade for the Mercedes M157 Biturbo 4 MATIC engine offers huge gains in performance across the entire RPM range without sacrificing around town comfort or daily driver reliability. This is ideal for customers who want increased performance in their daily driver without worry of extra strain on driveline components