Home » News » Subaru » Subaru STI division launches the STI 209 limited edition
Subaru makes one of the most powerful and fun cars on the planet. Now it builds also a car that packs more power than usual. Subaru Technica International, or STI for the fans, introduced the limited-edition STI S209, the first-ever S-line STI product produced exclusively for the U.S. market. 

As an S-line product, the STI S209 encompasses upgrades in power, handling, aerodynamics and driver engagement, and undergoes final assembly in Kiryu, Japan, where it receives engine modifications and bodywork alterations that in total require it to be homologated for the U.S. by STI.

The S209, like the Nürburgring Challenge racecar, wears an expanded wide-body exterior treatment, which extends the vehicle’s overall width to 72.4 inches, or 1.7 inches wider than a standard WRX STI.

Brembo brakes, with cross-drilled steel rotors and 6-piston monoblock front calipers and 2-piston monoblock rear calipers, provide stout stopping force, thanks in part to upgraded high-friction pads that deliver improved fade-resistance.

A thoroughly reworked version of the legendary EJ25 2.5-liter turbocharged BOXER engine propels the S209. Featuring an STI turbocharger manufactured by HKS®, the EJ25 serves up an estimated 341 horsepower, thanks in part to a larger turbine and compressor (up 6 and 8 percent, respectively, compared to WRX STI) as well as maximum boost pressure that has been increased to 18.0 psi (16.2 psi for WRX STI). Proudly displaying an S209 serial number plate, the enhanced BOXER engine utilizes forged pistons and connecting rods that are both lighter and stronger. Midrange torque, too, gets a notable bump, up 10 percent at 3,600 rpm, delivering higher corner exit speeds when driving on track.

For ultimate driver engagement, the S209 comes exclusively with a close-ratio 6-speed manual transmission that routes power to a full-time Subaru Symmetrical All-Wheel Drive system with front/rear limited-slip differentials, a Driver Controlled Center Differential (DCCD), Active Torque Vectoring and Multi-Mode Vehicle Dynamics Control. 

A recalibrated SI-Drive system offers three modes: Intelligent (I) for improved fuel economy and smoother power control; Sport (S) for optimized power balance between response and control; and Sport Sharp (S#) for achieving the best acceleration times. STI engineers recommend Sport over Sport Sharp for circuit driving, as the less aggressive throttle map allows for greater driver control.


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Related Specs

  1. 1998 Subaru Impreza 22B STi

    Engine: EJ22 Boxer-4, Power: 205.8 kw / 276 bhp @ 6000 rpmN/A
  2. 2000 Subaru Impreza WRX S201 STi

    Engine: Opposed-4, Power: 223.7 kw / 300.0 bhp @ 6500 rpm, Torque: 353 nm / 260.4 ft lbs @ 4000 rpm
  3. 2006 Subaru Impreza WRX STi RB320

    Engine: Boxer-4, Power: 235.6 kw / 316 bhp @ 6000 rpm, Torque: 450.13 nm / 332 ft lbs @ 3700 rpm
  4. 2006 Subaru Impreza WRX STi S204

    Engine: EJ20 Boxer-4, Power: 238.6 kw / 320 bhp @ 6400 rpm, Torque: 432.51 nm / 319 ft lbs @ 4400 rpm
  5. 2007 Subaru Impreza WRC2007

    Engine: Boxer-4, Power: 223.7 kw / 300 bhp @ 5500 rpm, Torque: 589 nm / 434.4 ft lbs @ 4000 rpm

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