Last year, BMW announced that the BMW M8 Coupe and Convertible would be skipping the 2021 model year, meaning that if you want a 2021 M8-badged BMW, it'll have to be the M8 Gran Coupe. Then again, the Gran Coupe is perhaps the prettiest of all 8 Series models, so that's no hardship. It's also one of the quickest stock BMWs you can buy, but as usual, the aftermarket has a lot to say about that. AC Schnitzer previously revealed a 720-horsepower version of the M8 Gran Coupe, but G-Power has just trumped that with an 809-hp monster.

That's far more power than BMW M Division's most powerful production car ever, the recently unveiled M5 CS sedan; this extreme M5 manages 627 hp. Together with the modified M8's 809 horses is no less than 738 lb-ft of torque. These numbers are available with the most powerful Stage 3 GP-820 performance software, although two lower-powered packages are also on offer for customers without an unlimited tire budget. As an optional extra, G-Power will remove the Vmax limiter to increase the top speed to 205 mph. The GP-820 package also includes a GP-Deeptone exhaust system with carbon tailpipes.

No 0-60 mph time was indicated but considering that the stock M8 Competition can accomplish the sprint in just three seconds, G-Power's M8 should be safely into supercar territory. G-Power claims that hot- and cold-weather testing of the upgrade has been completed in various climate zones. The price? Expect to pay €4,595 ($5,565 at current rates) or €4,714 ($5,709) including installation. If that seems reasonable, it's only the price for the GP-820 performance software itself. The OEM turbocharger upgrade goes for another €5,950 ($7,206). That doesn't include the €5,950 ($7,206) for the GP-Deeptone exhaust system and the €5,360 ($6,492) for the sport downpipes. Then again, you'll be able to eat most Porsches for breakfast whenever the opportunity arises.