R1 Performance Package | R230 | SL 550 | 413 HP / 422 LB-FT | 5.5L NA V8 | M273 mercedes-benz-clk-class--209---2004-2010--clk-63-amg-esr9002317 Upgrade the look of AMG

Upgrade the look of AMG GT Black Series with RENNtech Carbon Fiber Fender Extractor Inserts

RENNtech’s strut bar increases the torsional rigidity of the Mercedes-AMG W204 / C204 chassis

+50 HP / +95 LB-FT

the R1 package comes with our stainless steel downpipes with 200 cell sport catalytic converters

These side skirts are designed to fit the C190 - AMG GT R and GT R Pro

R1 Performance Package | R230 | SL 550 | 413 HP / 422 LB-FT | 5.5L NA V8 | M273 mercedes-benz-clk-class--209---2004-2010--clk-63-amg-esr9002317 Upgrade the look of AMGR1 Performance Package for 221 S 550. Includes ECU Upgrade and Stainless Steel Header. Up to 413HP and 422 LB FT. Gains: +31HP & +31LB 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