The R4 prototype will begin testing in August, with production of the final version slated to begin in the first quarter of 2007.
The R4 chassis is custom-built around a steel rollcage, with carbon-fiber bodywork front and rear, and a steel-covered cockpit area. Double wishbone suspension is fitted front and rear, managed by Proflex dampers.
The R4 prototype is driven by a 2.5-liter normally aspirated four-cylinder powerplant from Millington Racing Engines, putting out 340 hp at 8,700 rpm (damn!). 0-60 times of around 5 seconds are expected. Power is delivered through a DJM sequential six-speed gearbox, to a buyer's choice of RWD or 4WD configurations. More competition-oriented powerplants are being considered for the R4, including a 2.2-liter twin-turbo and a 3-liter V6 twin turbo, with the latter capable of 750 hp in competition trim. Only serious enthusiasts need apply - pricing for the 340 hp version is expected to start at around $240,000.
Fuzzy live shots of the R4 are here, but the computer-generated renderings are clearer. We'll update with pics when we find some good ones.
[Sources: 4Car, ColinMcRae.com]