The competition-spec model loses the folding roof in favor of a fixed one reinforced by a full roll cage. It also gets racing slicks and a much more aggressive aero package. But the fun part is the V8 engine from the outgoing M3, tuned to 480 horsepower and paired with a six-speed sequential gearbox.
Inside Line has it on good authority that the Z4 GT3 will soon be available to privateer racers in America, but it will, of course, be restricted to closed tracks. And considering it costs the equivalent of over $400,000 in Europe, it hardly fills the gap left by the absence of the street-legal Z4 M we're still pining for.