The Subaru WRX STI Type RA NBR Special has set a new lap record for a four-door saloon at the 20.6 km Nurburgring Nordschleife race track, achieving a time of 6:57.5. The time attack car has also set lap records at the Isle of Man TT and the Goodwood Festival of Speed hill climb, where it was also third fastest overall.

Not to be confused with the Type RA road car, this Prodrive-built race car is a 2017 WRX STI with a full roll cage welded into the standard body for added strength and stiffness. It is powered by a modified 2.0 litre Subaru WRC-spec boxer engine with a 75 mm intake, and the turbo runs at 25 psi of boost.

This produces more than 600 hp at 8,500 rpm. Prodrive calculated the top speed at the Nurburgring would be 288 km/h at 8,500 rpm in top gear.

The car has nine-inch-wide slick tyres all around. It uses a WRC gearbox with an automatic clutch, modified with hydraulics for paddle-shift operation. Shift times are some of the fastest at 20 to 25 milliseconds.

A redesigned aero-package, different than last year’s TT car set up, delivers improved handling and top speed on the NBR Special. At top speed, the whole package produces about 295 kg of downforce.

The design includes a Drag Reduction System rear wing similar to the technology found in F1 cars. With its combined electric and hydraulic operation, the wing can deploy for full downforce/drag under braking or in fast turns and then open for less downforce/drag on long straights. The driver has full control of the DRS via a steering wheel mounted control taking less than 20 milliseconds to change position fully.

GALLERY: Subaru WRX STI in Malaysia