Subaru WRX STI TRAX

Press release

The Subaru WRX STI, when equipped with proper tires, is capable of impressive all-weather performance. But when even snow tires are not enough, Subaru offers a solution - a 400-hp WRX STI equipped with a snow tracks system, as showcased at the 2009 Specialty Equipment Manufacturers Association (SEMA) Show at the Las Vegas Convention Center, Nov. 3-6.

Starting with a rally-prepared 2009 WRX STI, Subaru Rally Team USA’s technical partner, Vermont SportsCar, built the one-off 400-hp TRAX STI envisioned by, and built for, DC Shoes co-founder and SRT USA driver Ken Block. The WRX STI TRAX is ready for the half-pipe, with a Yakima FatCat 4 Snowboard Rack up top, a Yakima Landing Pad rack base and DC Shoes XFB-C Snowboards. Naturally, there is a custom matching sleigh to go with it.

With the exception of the Mattracks rubber track system, the car is rally-prepared and similar in specification Block’s #43 SRT USA competition STI. Starting with a stock 2009 Subaru Impreza WRX STI, Vermont SportsCar stripped the car’s interior bare, lightened the shell and then fully seam-welded it for added strength, also installing a multipoint roll cage manufactured from T45 steel. Major differences from the stock STI include the addition of lightweight carbon/Kevlar RECARO SPA ProRacer competition seats with the Head and Neck Restraint System (HANS), carbon fiber door panels and an onboard fire suppression system.

Under the hood, the ultimate Subaru snow machine sports a 2.5-liter, 4-cylinder, turbocharged and intercooled STI engine tuned with a MOTEC M800 ECU. The engine, which kicks out approximately 400 hp and 400 lb.-ft. of torque, is teamed with a KAPS 5-speed close-ratio dog-engagement gearbox and the Subaru programmable DCCD (Driver Controlled Center Differential) all-wheel drive system. Employing custom machined hubs, the drivetrain - which has been dropped three inches - is mated to Mattracks 105M1-A1 rubber track conversion. The car also features Group N competition rally dampers made by EXE-TC.