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The Continental Grand Prix 4000 S II offers Continental's updated Black Chili rubber compound which was first developed for the Moto GP motorcycle circuit. Continental put more molecular level carbon into the butyl rubber, reducing rolling resistance by 26%, increasing grip by 30% and increasing mileage by 5%. They're faster, grippier and last longer! The Continental Grand Prix 4000 S II has a dynamic siped tread with a protective Vectran layer positioned for added puncture resistance. 330 tpi.
Size: 700x23, 700x25 or 700x28 (black only)
Weight: 215 g.
Max Inflation: 120 PSI