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 294 LB-FT @ 3

294 LB-FT @ 3

Maserati Levante Modena (M161) 2017+

Whether your AMG GT is equipped with iron or carbon ceramic rotors

Turbo Upgrade with lightweight forged billet turbo wheel features a dramatically larger-than stock impeller (inlet side) and an increase in the turbine trim (exhaust side)

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

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 294 LB-FT @ 3R1 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