FOUR DOORS. ONE BIBLICAL V8.
The AMG GT63 4-Door is a 600+ horsepower twin-turbo V8 dressed as a luxury coupe. The factory exhaust keeps its fury politely muffled. The Benni Valved Cat-Back lets it out - a thunderous V8 roar on demand, executive calm with one click.
ONE CLICK. TWO PERSONALITIES.
Control the valves with the included remote - switch on or off any time.
VALVES CLOSED: Smooth and civilized. Cruise the highway, roll through your neighborhood, keep the peace.
VALVES OPEN: The gloves come off. A deep, aggressive, full-throated roar that announces you before you arrive and lingers after you're gone.
WHAT YOUR GT63 GAINS
| ✔ | A REAL VOICE — a richer, deeper, more aggressive exhaust note that matches the performance under the hood |
| ✔ | SOUND ON YOUR TERMS — one click of the remote: open the valves for the canyon, the tunnel or the car meet; close them for the commute |
| ✔ | FREER-FLOWING DESIGN — a performance cat-back layout designed to help the engine breathe out more easily than the restrictive factory rear section |
| ✔ | A SHARPER DRIVING FEEL — every press of the throttle comes with a soundtrack, so the car feels more alive and more connected |
| ✔ | BUILT FOR THE LONG HAUL — 304 stainless steel resists rust, heat and road salt for years of daily driving |
| ✔ | HEAD-TURNING PRESENCE — people hear you before they see you |
| ✔ | A FOUNDATION FOR MORE — a solid base if you plan future performance upgrades |
| ✔ | FULLY REVERSIBLE — bolts in place of the factory rear section, so you can return to stock any time |
WHAT YOU'LL NOTICE
| ◆ | FIRST START-UP — a deeper, angrier bark the moment the engine fires |
| ◆ | ON THE HIGHWAY — valves closed, a refined hum that won't wear you out on long drives |
| ◆ | UNDER HARD ACCELERATION — valves open, a rising roar that builds all the way up the rev range |
| ◆ | IN A TUNNEL OR PARKING GARAGE — you'll understand why people buy valved exhausts |
BUILT TO LAST
| ✔ | 304 stainless steel construction (1.2-1.5mm wall) |
| ✔ | Precision TIG-welded joints |
| ✔ | Valved mufflers with remote control on/off |
| ✔ | Bolt-on replacement for the factory rear section - no cutting, no welding |
| ✔ | Benni logo engraved - proof you didn't settle |
WHAT'S IN THE BOX
| ◆ | Mid-pipe and rear muffler section with valves (cat-back) |
| ◆ | Remote control for the valves |
| ◆ | Mounting hardware, clamps and gaskets |
| ◆ | Front pipes NOT included - your factory catalytic converters stay right where they are |
PERFECT FOR
| ◆ | Daily drivers who want sound without the drone of a straight pipe |
| ◆ | Weekend canyon runs and road trips |
| ◆ | Car meets and shows |
| ◆ | Owners who want a big upgrade without touching the engine or emissions parts |
FITMENT
Mercedes-AMG GT63 4-Door Coupe (X290) 2019+
Mercedes-AMG GT63 S 4-Door Coupe (X290) 2019+
4.0L twin-turbo V8, 4MATIC+
Made to order for your exact model
VIN confirmed before shipping
PLEASE INCLUDE YOUR VIN IN THE ORDER NOTES (or message it to us right after purchase). We confirm fitment with your VIN before your exhaust ships.
WHY BUY FROM BENNI
SHIPPING
Made to order - please allow up to 3 weeks for delivery. Worth the wait.
Professional installation recommended. Retains factory catalytic converters. Sound level varies by vehicle condition and modifications. Check your local noise laws.
Stop settling for stock. Give your GT63 the voice it deserved from day one.