The R4 tire combines Bontrager's new low rolling resistance 220 tpi casing, proven Plus puncture protection and Bontrager's exclusive aero wing technology for an unparalleled riding experience.
Features
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For higher performance, racing purposes only. Not intended for everyday use or training.
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220 tpi casing provides unparalleled comfort, light weight and low rolling resistance
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Bontrager-exclusive aero wings for advanced aerodynamics
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Integrated sub-tread puncture protection (Plus)