German tuner G-POWER has followed up their 750hp HURRICANE RS with a further modified BMW M5 sedan, the HURRICANE RR. The HURRICANE RR has just set a record speed of 231 MPH breaking the current record that was also held by the HURRICANE RS of 228 MPH set early in 2010.

The 800hp HURRICANE RR V10 is fed by two ASA T1-316 superchargers, one for each cylinder bank. G-POWER also states that this configuration could theoretically make as much as 900hp. The engine internals have also been modified to handle the added boost. New MAHLE high-performance forged pistons with lower compression and the connecting rods and piston pins have also been replaced.

Peak power is achieved between 7,500 and 8,000 RPM with 590 ft-lbs of torque available at 5,000 RPM. The Bugatti Veyron it isn’t, but the HURRICANE RR also doesn’t have the luxury of 16 cylinders, 8 liters of displacement, and 4 turbochargers. Just to put this into perspective, the Bugatti produces 125hp per liter, while the HURRICANE RR produces 160hp per liter.

As you would imagine, the HURRICANE RR also boasts some pretty impressive acceleration with a 0-62 time of 4.35 seconds, a 9.5 second sprint to 124 MPH and 186 MPH is reached in just 25.8 seconds. So….it’s not your average 4,000 pound executive hauler. It’s a 231 MPH supercar that just happens to have 5 seats and a trunk.

G-POWER has also made modifications to the aerodynamics with their HIGHLINE body kit. Consisting of front and rear skirts and spoilers, the HIGHLINE body kit helps to keep the car planted at speed with increased downforce as well as provide the needed cooling for the 5 liter V10. G-POWER also adds performance brake system and height-adjustable G-POWER RS coilovers to help with handling and stopping power.

How much does all of this cost? About $72k on top of the price of the donor M5. Used M5s are selling in the $50k range these days for a decent car, so if you were thinking about buying a the Porsche Panamera Turbo but thought it was a bit too “tame”, this is a great option. That is if you don’t mind a used car. Which in this case, why would you? $120k is a lot of paper, but with this kind of performance, the HURRICANE RR is in a league of its own.