With the Grand Prix Supersonic your contact with the road can be tuned to minimum weight and minimum rolling resistance. Together with a Race 28 Supersonic inner tube, our quickest tyre and tube set weighs only 200 g! The slick rolling area made out of a carbon black mixture looks great and is of course made using the Black Chilli recipie. A very apt weapon in fighting for personal best time, although for this extra speed the tyre does not feature any additional puncture protection and has limited mileage use. Not for training. Handmade in Germany. Weight: 150 grams.