Subaru has unveiled the latest addition to the company's line of S series performance vehicles. The WRX STI S206 comes equipped with an even higher level of go fast equipment than the base STI. Bilstein shocks, a flexible strut tower bar up front as well as a flexible draw stiffener all help the vehicle hustle around your favorite road course, as do the standard Michelin Pilot Super Sport tires on all four corners. Subaru has also taken the time to rework the vehicle's turbocharged 2.5-liter flat four-cylinder engine with a balanced crank, pistons and connecting rods. Combined with a ball bearing turbo and a new ECU, the lump is now good for 316 horsepower. That's a significant nudge over the 305 horsepower available in the standard STI.
The vehicle also offers a range of aesthetic tweaks inside and out. Those looking for even more exclusivity can dive into the NBR Challenge Package, which includes a carbon fiber roof and rear wing among other goodies. The WRX STI S206 with the NBR Challenge Package is designed to pay tribute to the Subaru class win at this year's 24 Hours of Nürburgring. Unfortunately, that beast has already sold out.