Back in 2012 G-Power unveiled the BMW M5 Hurricane RRS, which delivered an amazing output of 830 horsepower. Now, the tuner used the experience accumulated developing that car and created the M3 GT2 R, which is not only the baddest road-legal M3 around, but also a sort of tribute to the M3 GT2, which raced in numerous GT events between 2009 and 2013.

A base BMW M3->ke2366 delivers a total of 420 horsepower, but with some intensive work, the guys over G-Power managed to add another 300 horsepower to the car's V-8 engine, transforming the M3 Coupe into a real monster. Most likely, this will be one of the latest staggering upgrade kits offered for the M3 before it goes out of production in September.

Along with the amazing job done under the hood, G-Power also offers a modified aerodynamic package made entirely in carbon fiber to help increase downforce and save some weight.

Click past the jump to read more about the BMW M3 GT2 R by G-Power.

Exterior

With this upgrade, the car's exterior is heavily updated with a full carbon-fiber kit that includes a new front skirt, four new wings and a new rear skirt. There is also a new carbon front lip and a new multi-part carbon rear spoiler that helps improve the car's aerodynamic features.

G-Power will also install a new carbon-fiber hood that helps lower the M3's total weight.

Interior

For the interior, G-Power installs carbon-fiber racing front bucket seats and eliminates the rear ones altogether. G-Power then trims the interior in its in-house leather package that features numerous leather and Alcantara elements with blue contrast stitching.

G-Power also adds an element of safety by installing a roll cage, which also increases the rigidity of the body.

Drivetrain

As no surprise to anyone, G-Power will spend plenty of time under the hood of your M3. In here, the tuner starts by adding a G-Power M3 "Sporty Drive" supercharger system that includes an ASA Centrifugal Supercharger. To go along with the boost, there is also a tailor-made cooling system and a new titanium exhaust system with free-flowing 100 cpsi metallic catalytic converters.

All these changes bumps the M3's power output to mind-blowing 720 horsepower. When you add a total weight of just 3,300 pounds, you know you're in for some amazing performance figures. Unfortunately, G-Power is keeping the performance specs a secret, for now...

Suspension and Brakes

On the corners, G-Power adds in a set of 20-inch G-Power Silverstone RS wheels wrapped in Michelin Pilot Cup tires sized 245/30ZR20 on the front axle and 315/25ZR20 for the rear axle.

Bringing this powerful M3 to a stop is no easy task, so G-Power then switches its focus to installing a G-Power ceramic brake system, which features six-piston brake calipers up front with 396 mm (15.6-inch) rotors and four-piston calipers on the rear with 380 mm (15-inch) rotors.

G-Power didn't ignore the corners, as it also adds in a Clubsport coil-over suspension to keep things tight in the twist.

Prices

The price for the complete M3 GT2 R is €195,310 (about $257,000 at the current exchange rates); however, customers can opt to buy the components individually for the following prices:

Competition

BMW M3 GTS by G-Power

G-Power is no rookie when it comes to tuning the M3, but the new GT2 R is certainly the most powerful one. Still, for those customers interested, G-Power also offers the M3 GTS - a modified M3 Coupe with a total output of 650 horsepower at 7,800 rpm and a peak torque of 464 pound-feet at 3.900 rpm.

This version can sprint from 0 to 60 mph in 4.1 seconds – 0.3 seconds faster than stock and up to a top speed of 200 mph.

Mercedes-Benz C63 AMG Black Baron by Tikt

If you are not a fan of the BMW M3, you can also go and opt for a modified Mercedes model, like this C63 AMG Black Baron prepared by Tikt.

It has been updated with larger throttle valves, high-performance racing headers and a completely new high-performance exhaust system with a sports catalyzer and X-pipes. As a result, the C63 now delivers a total of 606 horsepower and 486 pound-feet of torque. Not as impressive as the M3 GT2 R, but still pretty good.

Cadillac CTS-V by Geiger Cars

If you are not a fan of the German sports coupes, then you can also opt for this Cadillac CTS-V tuned by Geiger Cars.

Geiger updated this CTS-V with new engine software, camshafts and a new sports exhaust system. This pushes the mighty CTS-V to 620 horsepower, which affords it a top speed of 218 mph.

Conclusion

With all these updates, the new GT2 R is transformed into hottest road-legal BMW M3 in the world. It looks more aggressive than ever before, plus it carries nearly double the stock output of the M3. As usual, G-Power did some amazing job!