R1 Performance Package | R171 | SLK 55 AMG | 385 HP / 400 LB-FT | 5.5L NA V8 | M113 bmw-m4--f82-f83---2014-2020--3-0-liter-twin-turbocharged-inline-6-esr1854239 Up to 530HP and 485LB-FT

Up to 530HP and 485LB-FT LB-FT

drivers can use the Sound Remote Controller or the new smartphone app (for iOS and Android) to regulate the valves

engineered and manufactured in house specifically for the SLS

Air Filter and BOV Adapters are required to reach full power output level

C205 - C63 AMG Coupe

R1 Performance Package | R171 | SLK 55 AMG | 385 HP / 400 LB-FT | 5.5L NA V8 | M113 bmw-m4--f82-f83---2014-2020--3-0-liter-twin-turbocharged-inline-6-esr1854239 Up to 530HP and 485LB-FTR1 Performance Package for 171 SLK 55 AMG. Includes ECU Upgrade and Carbon Fiber Air Box. Up to 385HP and 400 LB FT. Gains: +30HP & +24LB 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