R1 Performance Package | R230 | SL 550 | 413 HP / 422 LB-FT | 5.5L NA V8 | M273 mercedes-benz-e-class-coupe--238---2017-present--e-450-esr8918284 These proprietary carbon fiber side

These proprietary carbon fiber side skirts were designed to complement the RENNtech front splitter and rear diffuser

This set of wheels has been exclusively designed and weight optimized for the 190 - AMG GT R

the fiber is pre-impregnated (hence the name) with resin at a production facility

The CNC machined 6061-T6 aluminum mounting brackets are designed to be a direct fit into the  wing base

Diffuser Attachments and Rear Lipp Attachment

R1 Performance Package | R230 | SL 550 | 413 HP / 422 LB-FT | 5.5L NA V8 | M273 mercedes-benz-e-class-coupe--238---2017-present--e-450-esr8918284 These proprietary carbon fiber sideR1 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