Detroit LIVE: Subaru WRX STI S209

The limited-edition S209 is Subaru's most powerful model ever.

Subaru's limited-edition WRX STI S209 has made its first public appearance at the North American International Auto Show.

Following in the footsteps of a series of special packages sold in the Japanese market, starting with the S200 in the year 2000 through the S208 last year, the S209 will be available exclusively in the US market.

Engineers have reworked the company's 2.5-liter boxer engine to deliver 341 horsepower, a significant bump over the 310 ponies in the standard STI, while midrange torque jumps by 10 percent at 3,600 rpm. The increase was achieved via a larger HKS turbocharger that increases boost pressure from 16.2 psi to 18.0 psi, while the pistons and connecting rods have been strengthened and lightened.

The S209 looks at home on the track thanks to wider fenders, front canards and a sizable rear wing. Handling benefits from chassis and suspension tweaks, a flexible strut tower bar and tensioned draw stiffeners, along with 19x9-inch BBS wheels shrouded in sticky Dunlop SP Sport Maxx rubber.

Only 200 units will be manufactured, with pricing to be announced closer to the S209's late-2019 arrival.

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