STI's boffins have coaxed more performance out of the 2.0-litre turbocharged four-cylinder boxer engine used in the WRX STI. For the S207, power has been increased from 227kW to 241kW, while torque has been raised from 422Nm to 431Nm.
To go along with the increased performance, the company has fitted the S207 with a revised front suspension setup featuring adjustable damping, a new flexible tower bar, front-rear active torque vectoring for the all-wheel drive system, and a revised steering setup with a 11:1 ratio.
Stopping power is provided by a Brembo braking package utilising drilled discs, and six-piston callipers up front and four-piston units at the rear. The S207 rides on BBS 19-inch alloy wheels shod with 255/35 Dunlop Sport Maxx RT tyres.
Other external changes include red highlights, a mesh front grille, large front splitter, a more aggressively cut rear bumper, and S207 badging. Interior upgrades extend to Recaro front buckets seats, silver and red accents, black leather, revised instrumentation, and a commemorative numbered plaque.
Subaru says that it will only produce 400 units of the S207 in either blue pearl, white pearl or black, although it will also churn out 100 NBR Challenge Package Yellow Edition models too.
S207 models will be available in either standard form, or with an optional NBR Challenge Package that includes a suede covered steering wheel, black BBS 19-inch alloy wheels, and a large black rear spoiler. Yellow Edition models also gain black wing mirrors, and a unique yellow and black sill arrangement.
The WRX STI S207 goes on sale in Japan from early March 2016.