A lot of BMW enthusiasts are not very big fans of the E63 M6's styling. However, everyone agrees that under the bonnet lies one of the greatest engines of all time, the almighty 5.0-Liter naturally aspirated S85 V10 producing a healthy 507 Hp. G-Power is no stranger to tuning BMW M cars, and this time they pushed the boundaries even further by taking 800 Hp out of the V10 engine thanks to a new bi-supercharger system. And that allows the M6 Hurricane RR to achieve a top speed of 372 Km/h (231 mph) to make it the world's fastest (road legal) 4-seat coupé.

Several series-production engine parts like con rods and piston pins have been replaced with dedicated ones in order to handle the increase in forces. The Hurricane RR features a new aero package that includes carbon fiber side skirts and a rear spoiler to increase downforce at higher speeds and has been fitted with 20 inch SILVERSTONE CLUBSPORT black wheels that weight as much as the series-production smaller ones.

The 0 to 100 km/k (62 mph) time of 4.35 seconds remains relatively high for a machine as powerful as the Hurricane RR and that is mainly due to the 1,710 Kg (3,769 pounds) weight of the car but then things get better with a 200 km/h (124 mph) time of 9.5 seconds and 300 km/h (186 mph) in 24,9 seconds. More pictures of the beast in the gallery below.

[source: G-Power]
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