R1 Performance Package | W211 | E 55K | 538 HP / 566 LB-FT | 5.5 Supercharged V8 | M113 mercedes-benz-s-class--222---2018-2020--s-650-maybach-esr9170956 Up to 428HP and 417TQ

Up to 428HP and 417TQ

RENNtech SLR package 2 contains our proprietary ECU

5" front and 1

RENNtech M157 Biturbo ECU+ Upgrades are TÜV approved

RS6 (C8 4K)

R1 Performance Package | W211 | E 55K | 538 HP / 566 LB-FT | 5.5 Supercharged V8 | M113 mercedes-benz-s-class--222---2018-2020--s-650-maybach-esr9170956 Up to 428HP and 417TQR1 Performance Package for 211 E 55 AMG Kompressor. Includes ECU Upgrade, Crankshaft Pulley and Upgraded Intercooler Pump. Up to 538HP and 566LB FT. Gains: +69HP & +50LB FT Performance package R1 includes our proprietary HHT Hand Held Tuner ECU Upgrade and crankshaft pulley in addition to our higher efficiency intercooler pump for increased, power, performance and throttle response across the entire powerband. R1 Performance Package includes: RENNtech