Brabus has taken the Mercedes-AMG G 63 and removed its roof to create the 900 Rocket Edition Cabrio, a four-door convertible with 888 horsepower. The tuner unveiled the open-top SUV at the Monaco Yacht Show, with German pricing exceeding €1 million including VAT.

The export price for the featured car is €890,740 before German VAT, equivalent to about $1,019,000. With tax included, the price rises to €1,059,980, or roughly $1,210,000.

888-hp V8 powertrain

The Rocket Edition Cabrio replaces the standard G 63’s 4.0-liter engine with a reworked twin-turbo 4.5-liter V8. Brabus builds the engine around forged pistons, connecting rods and a dedicated crankshaft.

Output reaches 888 hp and 922 lb-ft of peak torque. Brabus electronically limits the torque sent to the wheels to 774 lb-ft, but the large convertible still accelerates from 0 to 62 mph in 3.7 seconds. Top speed is limited to 149 mph.

The speed restriction reflects the vehicle’s unusual combination of a tall SUV body, an open roof and 24-inch forged Monoblock II wheels. The wheels wear 295/30 tires at the front and 345/25 rubber at the rear. A KW-developed adjustable suspension lowers the body by 1.8 inches.

More than 500 parts for the conversion

Brabus says the roof conversion required more than 500 new components. The two-piece electrically operated fabric top opens or closes in 20 seconds and includes a heated glass rear window.

Removing the fixed roof required additional structural work. Brabus reinforced the windshield frame and added bracing throughout the body, while a steel roll bar behind the rear doors is finished with visible carbon fiber on the outside.

The exhaust system uses switchable valves and four side-exit tips. A quieter “Coming Home” setting is available alongside the louder Sport mode. Each car also receives a blockchain-based digital passport documenting its authenticity, ownership history and build specifications.

Limited production and testing

Brabus says the roof conversion leaves the vehicle with hardtop-level sealing after testing. Every completed car reportedly spends more than ten hours in simulated rain inside a climate chamber before delivery.

The source material gives two production figures for the program: its key facts describe a limit of 50 examples, while the launch details state that production tops out at 10 cars worldwide. Either figure makes the Rocket Edition Cabrio a highly limited conversion.

The project arrives as Mercedes-AMG prepares its own G-Class Cabriolet. The factory G 63 Cabriolet is due globally from 2027, with a U.S. launch expected around 2028. Brabus has previously built the 1,000-hp Bodo Cabriolet, which was limited to 77 units.