Mercedes-AMG SL63 R231 Valved Exhaust System (2013-2020)

The Mercedes-AMG SL63 R231 exhaust in detail.

The M157, the 5.5-litre twin-turbo V8 of the 63 models of its generation, gives the SL63 R231,537, 564 or 585 hp depending on the version, with 800 to 900 Nm available over a very wide range. Rear-wheel drive, retractable roof: this roadster is a grand tourer capable of genuinely sporty acceleration. Our page lists the 2013 to 2020 SL63 and leaves out the year 2012.

With the roof open, the exhaust is the first thing you hear, and the factory one restrains the V8’s deep voice, which rolls at idle and races under acceleration. With the valves open, the Rog cat-back puts the M157 in the foreground: every acceleration is experienced under the open sky, every downshift gains depth. With the valves closed, the SL regains the discretion of a grand tourer, for late returns home.

Only the valved rear system is sold here: no front section is listed for this roadster, and the original catalytic converters stay in place. Fitting in about two hours, clamps and gaskets, no welding, an exhaust made to your VIN, with the factory valve control or the Rog remote.

For those considering complete tuning, the page publishes for the 585 hp version a Stage 2 at 693 hp and 1,208 Nm, which requires an ECU remap and parts this page does not sell. The system, for its part, brings sound and a little lightness, especially in titanium, around 40% lighter than 304 stainless steel for the same design.