Fastest production 911 gets even more output from tuner Sportec with the SP 800 R doling out 800 PS (588 kW).

This is the Sportec SP 800 R, based on the Porsche GT2 RS.

Aerodynamic touches are light, as Sportec only fits the range-topping (and fastest production 911 ever) with their own front lip spoiler and rear spoiler - all in carbon fiber, of course.

Under the hood, the 3.6 liter flat-six now delivers 800 PS (588 kW / 789 bhp) and 900 Nm (664 lb-ft) of torque over the series' 620 PS (462 kW) thanks to a new hybrid turbocharger, sport camshaft, sport intercoolers, new connecting rods, sport air filter, and an ECU-remap. Also helping with output is the new titanium sport exhaust.

All told the extra power is good for a 0 to 100 km/h sprint in 3.1 seconds while top speed is a more-than-breezy 373 km/h (232 mph) - substantial bumps over the production model's 3.5 second run and 330 km/h (205 mph) top speed. 

Replacing the series model's 19-inchers are the Sportec Mono/7 alloy 20-inch (ET40) wheels with central locking and Cup tires - in dimensions 9 x 20-inch and 12 x 20-inch, with 245/30/R20 und 315/25/R20 tires, front and back, respectively.

The SP 800 R gets a suspension lowering of 25 mm for increased downforce too.

Gallery: Sportec SP 800 R based on Porsche 911 GT2 RS