The new 450 hp 911 GT3 RS should accelerate from 0-100 km/h in four seconds, before hitting a top speed in excess of 314 km/h.

Porsche has officially unveiled the facelifted 2010 911 GT3 RS.

Designed to be the ultimate rear-wheel drive sports car, the RS features a modified version of the GT3's 3.8-liter boxer engine. Peak output climbs to 450 hp, which is 15 hp more than the standard GT3. Backed up by a short-throw six-speed manual transmission, the new 911 GT3 RS should accelerate from 0-100 km/h in four seconds, before hitting a top speed in excess of 314 km/h (195 mph).

Other performance tweaks include a wider front and rear track, a revised suspension management system, active engine mounts (which adjust their stiffness to reduce drivetrain shuffle), and an optional lithium-ion battery (it weighs 10 kg/22 lbs less than a conventional lead battery).

In terms of styling, the RS features a unique two-tone paint scheme, extended fender flares, 19-inch wheels, a center-mounted titanium exhaust system, and a massive carbon-fiber rear wing.

The GT3 RS will debut at the Frankfurt Motor Show next month with sales starting in Germany in January 2010. The Euro base-price is Euro 122,400.- without value-added tax and national specifications. In the U.S. the 2010 911 GT3 RS goes on sale in early spring of 2010 and will be priced at $132,800.

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