R1 Performance Package for CLS 550 (C219- 422 HP / 421 LB-FT) r-package must be made of the

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

Forged Monoblock Tire Size: 245/35/21

CLASS S (W 220) 63 AMG [2 Filters Required] (HP: 444 | Year: 01 > 02)

000 rpm Note: Mercedes M178 engine performance when measured on the dyno obtains higher power numbers than rated from factory

RENNtech M157 Biturbo ECU Upgrades are TÜV approved

R1 Performance Package for CLS 550 (C219- 422 HP / 421 LB-FT) r-package must be made of theR1 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