The GT6 RD-4C features the same modern and aggressive design as the HP6 RD-4C, developed for racers in closed-car environments, featuring a wide eyeport for extended vision with a lightweight premium carbon glass shell. The closed-face GT6 RD-4C integrates the latest technology from ZeroNoise® including advanced electronics, high power speakers and noise canceling microphone to assure outstanding performance, sound insulation and communication efficiency.