RENNtech Stainless Steel Sport Mufflers | C207 | E550 Coupe | M278 | 4.7L V8 BiTurbo | MY2012-2017 mercedes-benz-sl-class--231---2017-present--sl63-amg-esr2518058 657 HP @ 6800 RPM

657 HP @ 6800 RPM

Comparing to alternative product

weight reductions in the vehicle’s rear deliver substantially improved handling

670 HP @ 5500 RPM

Upgraded Fuel System and Turbo Upgrade

RENNtech Stainless Steel Sport Mufflers | C207 | E550 Coupe | M278 | 4.7L V8 BiTurbo | MY2012-2017 mercedes-benz-sl-class--231---2017-present--sl63-amg-esr2518058 657 HP @ 6800 RPMRENNtech Stainless Steel Sport Mufflers C207 E550 BiTurbo MY2012 2014. Gains: +15HP & +20TQ. RENNtech T 304 stainless steel (SS) sport mufflers are hand made and rigorously tested to remove any unwanted resonances in the cabin to deliver a deep sound that keeps with the character of a luxury performance vehicle. Our mufflers with 2 1 2" diameter tubing offer lighter weight than the stock exhaust and improve performance by reducing exhaust back