RENNtech Intermediate ECU Upgrade | X166 | GL63 AMG | SUV | 638 HP / 695 LB-FT | M157 | 5.5L V8 BiTurbo | MY2013-15 bentley-bentayga-speed--2019-present--6-0l-twinturbo-w12-esr6746698 0 TFSI (4M8)

0 TFSI (4M8)

These RENNtech rear diffuser extensions create an all new aggressive and functional aesthetic for the rear of the C190 - AMG GT R

the extractor inserts complement the OEM carbon fiber hood of the AMG GT Black Series

RENNtech Carbon Fiber Rear Wing for X290 - AMG GT 4-Door Coupe -series

FL and manufactured to highest specifications in USA

RENNtech Intermediate ECU Upgrade | X166 | GL63 AMG | SUV | 638 HP / 695 LB-FT | M157 | 5.5L V8 BiTurbo | MY2013-15 bentley-bentayga-speed--2019-present--6-0l-twinturbo-w12-esr6746698 0 TFSI (4M8)Intermediate ECU Upgrade Up to 638HP 695LB FT Gains: +64HP & +72LB FT RENNtech M157 Biturbo ECU+ Upgrades are TV approved! Our proprietary 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. Our intermediate level ECU upgrade offers huge gains in performance across the entire RPM range without sacrificing around town