Schwalbe Ultremo ZXSpeed, grip, and durability are what make Schwalbe's Ultremo ZX an awesome race tire. Their RaceStar Triple Compound tread features a fast-rolling center section with softer and stickier sides for sure cornering. The ZX also has High-Density SpeedGuard puncture protection to reduce the incidence of flats while keeping weight low. Features and Information
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