R1 Performance Package for CLS 550 (C219- 422 HP / 421 LB-FT) r-package 000 RPM delivering peak gains

000 RPM delivering peak gains of +336 HP and +173 LB-FT without sacrificing traction and drivability in the lower RPM range

15 sec 127 mph X290 - AMG GT63 Rt ECU Upgrade w/Launch Control 2

must be made of the best raw materials and must improve performance

RENNtech M157 Biturbo ECU Upgrades are TÜV approved

this RENNtech carbon fiber rear wing is a must have for any AMG GT 4-Door Coupe enthusiast

R1 Performance Package for CLS 550 (C219- 422 HP / 421 LB-FT) r-package 000 RPM delivering peak gainsR1 Performance Package for 219 CLS 550. Includes ECU Upgrade and Stainless Steel Header. Up to 420HP and 421 LB FT. The R1 performance package for the Mercedes 550 includes our proprietary ECU upgrade in addition to our stainless steel shorty headers designed specifically for the 550 V8 for a combination that provides increased performance, sound and throttle response across the vehicles entire powerband. R1 performance package includes: RENNtech ECU