• 2021 G-Power G4M Bi-Turbo and G3M Bi-Turbo

700 horsepower and a top speed of 207 mph move the BMW M3 into the supercar territory

LISTEN 02:41

G-Power is famous for its upgrade kits for the BMW models. As it was to be expected, the new BMW M3 and the M4 with their striking kidney grilles caught the tuner’s attention too and they both received some serious power boost. Both packages - called G3M and G4M - will be available for order starting December 2021.

What changes were made under the hood?

2021 G-Power G4M Bi-Turbo and G3M Bi-Turbo Exterior
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The kit is mostly focused on adding more power to the engine, but there are also a few changes made to the exterior look too

The current generation BMW M3 and M4 are offered with a twin-turbo, 3.0-liter inline-six engine. In base form it delivers a total of 473 horsepower and 405 pound-feet of torque, while for the Competition versions the output has been increased to 503 horsepower and 479 pound-feet of torque.

G-Power is offering an upgrade for the engine, that will take the final output to as much as 700 horsepower. There are three different levels of upgrade.

2021 G-Power G4M Bi-Turbo and G3M Bi-Turbo Drivetrain
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Level one includes a GP-600 software and updates the output up to 600 horsepower

The first level only includes a GP-600 software and updates the output up to 600 horsepower. The next level combines the GP-600 software with a Deeptone exhaust system and brings the output up to a total of 650 horsepower. The third level offers the same updates as the second one, but also adds sports downpipes. In this case the final output goes up to an impressive 700 horsepower. G-Power is also working on a fourth level that will bring the final output up to a total of 750-800 horsepower, but it will be available at a later date.

With the 700 horsepower under the hood, the M3 can reach a top speed of 207 mph - up from the standard 180 mph.

Are there any other changes?

2021 G-Power G4M Bi-Turbo and G3M Bi-Turbo Exterior
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The next level also adds a Deeptone exhaust system and brings the output up to a total of 650 horsepower

Not many, but yes! G-Power is also updating the exterior look a little bit too. The standard engine hood was replaced by the tuner’s famous Venturi carbon fiber hood that offers a better ventilation for the engine compartment.

There is also a carbon fiber rear wing and a carbon spoiler that help improving the aerodynamics.

G-Power is also offering its customers the possibility to opt for its famous Hurricane RR or Hurricane RS forged wheels, sized either 20″ at the front and 21″ at the back or 21″ all around. For the last option though customers will also have to opt for the V4 coilover suspension that will lower the car’s ride by 15 to 40 mm.

Alina Moore
Alina Moore
Alina Joined the Topspeed.com team in the early 2000s as one of the outlets very first experts, and she’s been with Topspeed.com ever since. Over the years, she’s served various roles, but today she’s is relied on heavily to verify automotive facts, assist with formatting, and discover new and engaging topics.  Read full bio
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