Billed as the world’s fastest Mercedes-powered Mercedes, this video shows a RENNtech-tuned Mercedes SLR McLaren doing a 10.31 in the quarter mile. With a trap speed of 136 mph, it’s pretty quick, considering that the mods done to it consisted only of bolt-ons. Combining a smaller supercharger pulley, upgraded intercoolers, revised ECU and a sports exhaust resulted in an output of 770 horsepower. As you can see, the tuner left well enough alone but even with these relatively minor mods, the resulting performance was enough to turn in a pretty quick time.

The only numbers the chief executive officer would release were the top speed of over 350 kilometers per hour and a price tag of 1.9 million Euros.  Not exactly a Black Friday special, but then again, Sievers, or for that matter, Mercedes, doesn’t make enough of this exclusive toy that you can find them in any Mercedes showroom.

The builders added to the already aggressive-looking SLR a Mansory Renovatio body kit with matching 20-inch Agetro M140 monoblock rims. To adjust the stance for particular ride heights, a KW coilover suspension with a hydraulically adjustable height kit allows variations in a 45 mm range. But to back up its aggressive stance and looks, RENNtech supplied an upgraded supercharger kit that boosts horsepower to 770. This upgrade has enabled this super Mclaren SLR to hit a 10.29 second 134 mile per hour run. And rather than mere words, the builders have posted at video on Youtube to substantiate their claim.

Owners of the McLaren SLR who, despite the rarity of their supercars desire more exclusivity can now look to Wheelsandmore, the German tuners known for their exteme makeovers.

Obviously, 620 horsepower is not enough for these guys, as their made over SLR, proudly called the SLR 7o7 edition makes, you guessed it, 707 horsepower. This extra output was made possible with the use of a larger compressor and ECU tuning. Torque output is also an outstanding 915 Nm, compared to the stock, but not insignificant 780 Nm.

This extra power is handled by a racing-style coilover suspension featuring high-strength aluminum, as well as lightweight 20-inch wheels wrapped in Dunlop Sportmaxx rubber. These grippy tires assist the car in making its 3.5-second, 0-60 mph time. Interior tweaks have been limited to carbon fiber trim and AMG shift paddles, as the extra power and improved handling are more than enough to keep the driver occupied.

Reportedly owned by an Arab, this car was given the full treatment, as it’s got 20-inch chrome wheels and chrome tinted windows. Since Brabus handled the modifications, we can assume that the upgrades did not stop with the exterior. Some engine tuning was also done to increase output to 650 horsepower but because this car was caught moving, no detail shots of the interior are available. It’s safe to say that it won’t be stock. With a top speed of 340 km/h and at 0-100 time of 3.6 seconds, this car should look like the proverbial silver bullet as it flashes down the road.

As with the SLS AMG, Wheelsandmore is offering two upgrade packages for the standard SLR. For the first stage, the tuner will do an ECU remap of the engine, raising power from the standard 626 horsepower and 780 Newton-meters of torque to 650 horsepower and 830 Nm. The stage II remap brings the output up to 680 horsepower and 870 Nm.

Since the SLR 722 comes from the factory with 650 hp and 820 Nm on tap, the stage I mods come in the form of an ECU upgrade, as well as replacing the factory exhaust with a handmade stainless steel exhaust system. Sport catalytic converters and new mufflers also replace the factory units. This first step up up gives the car 670 hp and 855 Nm of torque. The stage II kit bumps the horsepower rating to 700 and supplies 910 Nm of torque to your right foot.

Other upgrades available include an aluminum coilover suspension with adjustable compression and rebound settings, as well as uprated brakes to cope with the horsepower increase. Also available are 20-inch lightweight alloy rims, carbon fiber components and quilted leather interior.

The come backing Mercedes-Benz SLR Mclaren which was displayed at the Essen Motor Show, has a more attractive redesigned front bumper with oversized air intakes and a new type of mesh grille. The rounded shape side air vents has a new layout giving it a sportier look, and add to that, the new rear diffuser for its aerodynamics.

The power plant is still expected to be the same supercharged 5.4 literV8 engine with 626 horses in it with a peak torque of 780 Nm (575 lb-ft) capable of doing 0 to 62 mph sprint in 3.8 seconds. McLaren has not released any details yet about the car, so an official confirmation on the project should say if there are any tweaks done on the engine.

The project is to show competition on how the performance-delivering job is supposed to be done. The development is some sort of a customer tuning project and it seems McLaren would like to keep info in the wraps. Meanwhile, let’s stay on the sidelines and be on the look out for that official confirmation.

Ever shopped on eBay? Well, you had better if you want to get a load of this 2007 Mercedes-Benz SLR 722. Believe it or not, this baby was once owned by the now-retired but still very much unsurpassable Airness himself, Michael Jordan. It’s only got about 962 miles on its odometer, and still has factory warranty up until August of next year… or 50,000 miles, whichever comes first.

This limited 722 Edition boasts crystal antimony grey paint finish with an equally impressive black interior color. The powerplant under the hood has about 650 horses once you rev at 6,500rpm, and delivers around 830Nm of torque at 4,000rpm. She’ll be able to take you past the 200mph mark, specifically 209mph, which makes her faster than the base SLR model by around 2mph. Zero to 60mph? A mere 3.6 seconds.

With such power, it’s no question that the 722 rides on a tuned suspension system. Its dampers have been adjusted for stiffness while its 19-inch black alloys come to a halt using 15-inch brake rotors. The front air dam had been revised while a rear diffuser was added to improve the 722′s overall downforce.

eBay’s asking for US$429,990 or whoever bids the best offer. For that price, you’ll get full documents, books, keys, interior amenities, k40 radar and, of course, your very own SLR car cover. Until October 31 only people.

The car specification pretty impressive, even for today’s standards. It has the Formula 1 car’s 8 cylinder in-line engine, 310 horsepower, and a maximum torque of 318 N-m. The high-octane fuel mixture of 65 percent low-lead gasoline and 35 percent benzene makes the car fuel somewhat odd.

But it has some drawbacks. Even with the innovative air-brake, the drum brakes were not effective enough to stop driver Pierre Levegh, who was driving a Mercedes Benz 300 SLR in a race event, to become airborne. The ultra-lightweight bodywork’s high magnesium content caused it to ignite in the ensuing fuel fire, causing significant injury and loss of life of 82 spectators including Levegh.

It was the highest fatality accident in the history of motor sport. Following the tragedy, Mercedes withdrew from competitive motor sport until the mid-1980s. Flame on indeed!

Hakkinen, who once spent time with Mercedes’ McLaren and despite his retirement, remains involved with Mercedes in an undisclosed role. Hakkinen is one lucky guy to be driving the Stirling Moss for this commercial (possibly while another one’s sitting in his garage at home). Mercedes only crafted 75 of these SLRs and its pricey tag of over one million US dollars could be quite steep for ordinary guys like me.

Mercedes didn’t give any information about the upcoming ad but an Opel Astra Coupe and what appears to be a Ferrari (though watchers said it couldn’t have been) were part of the shoot, probably as part of the support cast.

Photos courtesy of Lluis Comas