The fastest clincher in the world! The Grand Prix Supersonic offers exceptionally low rolling resistance that rivals that of our renowned tubulars. Our super-fine, polyamide casing combined with a thin layer of ASCŪ Silica treads compound is extremely lightweight and is designed to allow unusually high inflation pressures. Possibly one of the best time trial tires ever designed. For 2005, the tire has been modified to include more carbon in the tread compound. This improves wet grip and marginally boosts the mileage of the tire. Slick tread & super fine 310 tpi casing, 650 x 23 150 grams / 700 x 20 150 grams / 700 x 23 160 grams
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