S for Sport, Special and Schwarz (black). This is the awesome GP4000 made with Conti's magic Black Chili compound for less rolling resistance and better grip and mileage. May the Schwarz be with you!
Great set of high-performance road race tires, now with Vectran and Black Chili. New tread design for speed on the straights and stability through the turns.
Specifically designed for use with rollers and trainers, which can damage expensive road tires. the UltraSport Hometrainer is not designed for road use.
The ultimate combination of puncture protection, handling confidence and low rolling resistance. 700c x 23mm (23-622 ISO); 195g or 700c x 25mm (25-622 ISO); 210 grams. 100-150 PSI.