R2 Performance Package | C219 | CLS 55K | 588 HP / 616 LB-FT | 5.5L Supercharged V8 | M113 porsche-911--992---2018-present--carrera---cabriolet-esr2933448 GLC300 (X253)

GLC300 (X253)

Note- a transmission control unit upgrade (TCU) is also available (add $950)

RENNtech Blow-Off Valve Adapter

Diverter Valve and Air Filters | Gains: +122HP

With the proprietary RENNtech ECU Tuning the W222 - S63 AMG 4MATIC+ gains up to +87 HP and +44 LB-FT

R2 Performance Package | C219 | CLS 55K | 588 HP / 616 LB-FT | 5.5L Supercharged V8 | M113 porsche-911--992---2018-present--carrera---cabriolet-esr2933448 GLC300 (X253)R2 Performance Package for 219 CLS 55 AMG Kompressor. Includes ECU Upgrade Crankshaft Pulley and Upgraded Intercooler Pump. Up to 588HP and 616LB FT. Gains: +119HP & +100LB FT Performance package R2 takes performance to the next level and is a step up from our R1 tuning package. The R2 performance package includes the same components found in our R1 package with the addition of a full carbon fiber airbox, RENNtech stainless steel exhaust headers, 82