2009 SEMA Show: Subaru Impreza WRX STI Trax

Article by Christian Andrei, on August 29, 2009

At the SEMA Motor Show, Subaru revealed a 400 horsepower WRX STI with snow tracks. The TRAX was based on a rally-prepped 2009 WRX STI and was built by Vermont SportsCar for SRT USA driver Ken Block. Except for its Mattracks rubber track system, the TRAX is almost distinguishable from Block's 43 SRT USA competition STI.

Vermont SportsCar took a stock Impreza WRX STI and then gutted the interior. It proceeded to lighten the shell and then it fully seam-welded it for added strength.

Vermont SportsCar then installed a multipoint steel roll cage. At that point, RECARO SPA ProRacer competition sport seats were then added along with carbon fiber door panels and an onboard fire suppression system.

Additional features include a Yakima FatCat 4 Snowboard Rack, a Yakima Landing Pad rack base, and DC Shoes XFB-C Snowboards. Powering the vehicle is a turbocharged 2.5-liter four-cylinder engine (with a MOTEC M800 ECU) that gives an output of 400 hp and 400 lb-ft of torque.

Aside from the pumped-up engine, Vermont SportsCar also installed a KAPS five-speed close-ratio 'dog-engagement' gearbox, a Subaru programmable DCCD (Driver Controlled Center Differential) all-wheel drive system, custom machined hubs, and Group N competition rally dampers by EXE-TC.

The awesome features of the TRAX don´t end there. It also comes with a custom carbon fiber sleigh, which can accommodate four passengers.

The sleigh rides on steel skis and a torsion bar suspension. It also has heated leather RECARO seats, a marine-grade Alpine stereo system, LED lighting, and carbon fiber trim.

Press Release

Subaru Impreza WRX STI Trax

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 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.

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