The Perfect BMW M5 CS Gets A Ridiculous 890-HP Upgrade

Tuning / Comments

Hello horsepower, goodbye tires.

The BMW M5 CS is perfect. Full stop. Sure, it's bleeding expensive at $142,000, but that sum gives you access to a clever switchable AWD system that can still light the rear rubber with ease. The 4.4-liter twin-turbo V8 produces a whopping 627 horsepower, allowing you to reach 60 mph in just 2.9 seconds, while the theater of the four bucket seats, yellow DRLs, and gold-bronze accents are worth their weight in, er, gold. It truly is a special supercar in a suit, but somehow, there are those in the world who are not satisfied and have decided to upgrade the car's ability. Tuning company G-Power is the latest, and the results are wild. Meet the G5M CS Bi-Turbo.

G-Power
G-Power
G-Power
G-Power

Various tuning packages are on offer, starting with the GP-700 that unlocks a total of 690 hp and boosting twist to 627 lb-ft of torque (up from 553 as standard). Opt for the GP-740 package and you get a GP Deeptone exhaust system and 730 horses with 664 lb-ft. Next on the list is the GP-780 package which further adds sports downpipes and gives you access to 769 hp and 701 lb-ft. You'd think that this would be more than enough - rival tuner Manhart stopped at 777 hp - but with some hardware upgrades, the GP-820 kit will produce 809 hp and 737 lb-ft while the upgraded turbos and aforementioned exhaust upgrades offered with the GP-900 can give you a monstrous 887 hp and 774 lb-ft. No acceleration or top speed claims have been made, but there are some cosmetic upgrades on offer.

G-Power
G-Power
G-Power
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Forged Hurricane RS or Hurricane RR wheels are available in 21-inch sizing (20s are also offered for the latter double-spoke design) as are 100-millimeter tailpipes in a choice of regular or forged carbon fiber. A GP-Ventury vented carbon hood can be fitted too, along with a GP-Dynamic rear wing, but these are aimed more at the regular M5 owner than the one that got a CS. As you can imagine, no tuning package for such an exclusive machine will be cheap. The base, software-only GP-700 setup will cost over $2,800 while the GP-820 upgrade will set you back almost $27,000. The top-tier GP-900 package is not listed on the tuner's configurator, but don't be surprised if this costs over $30,000. Ouch.

G-Power
G-Power
G-Power
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