R1 Performance Package | W203 | C 55 AMG | 385 HP / 400 LB-FT | 5.5L NA V8 | M113 mercedes-benz-slc-class--172---2016-present--slc-43-amg-esr5326223 RENNtech Stainless Steel Sport Mufflers

RENNtech Stainless Steel Sport Mufflers with Valves for the C217 - S 550 Coupe BiTurbo

253 - GLC AMG Models SUV + Coupe

679 wtq @ 4

CLASS S (W 220) 55 AMG V8 [2 Filters Required] (HP: 360 | Year: 99 > 02)

up to an astonishing 582 HP and 752 lb/ft at the crank

R1 Performance Package | W203 | C 55 AMG | 385 HP / 400 LB-FT | 5.5L NA V8 | M113 mercedes-benz-slc-class--172---2016-present--slc-43-amg-esr5326223 RENNtech Stainless Steel Sport MufflersR1 Performance Package for 203 C 55 AMG. Includes ECU Upgrade and Carbon Fiber Air Box. Up to 385HP and 400LB FT. The R1 performance package for the Mercedes 55 series engine includes our proprietary ECU upgrade in addition to our full carbon fiber airbox upgrade which offers a larger volume of incoming air for better engine breathing and improved cylinder filling. This combination that provides noticeable increases horsepower, torque and throttle