R2 includes: ECU Upgrade, Diverter Valve, Air Filters, Sport Mufflers and CF Airbox | Gains: +111HP; +147LB-FT
R3 includes: ECU Upgrade, Diverter Valve, Air Filters, Sport Mufflers, CF Airbox and Turbocharger Upgrade | Gains: +185HP; +231LB-FT
RENNtech Sound and Style Package for the C217 - S 63 AMG Coupé. Including Stainless Steel Sport Mufflers w/Electronic Valve System and Carbon Fiber...
RENNtech Stainless Steel Sport Mufflers w/Eclectronic Valves for the W217 - S 63 AMG Coupe BiTurbo. Gains: up to 10 HP & 15 TQ.
RENNtech Pre-Preg Carbon Fiber Airbox for M157 - 63 BiTurbo Series with upgraded Turbo Charger. Gains: +10HP & +10TQ