Challenge, Seamless Latex Inner Tube, Tube, Presta, Derailleur From the precise shifting of

From the precise shifting of the high-performance Shimano Ultegra groupset to the reliable stopping power of the disc brakes

Lightweight design: 15g pod and 28g strap

XDR Freehub

Rally power meters have undergone rigorous testing to ensure total reliability

P ZERO™ Race SL-R is the latest and most advanced tire in the P ZERO™ Race road-racing range

Challenge, Seamless Latex Inner Tube, Tube, Presta, Derailleur From the precise shifting ofChallenge produces the only seamless 'one piece' latex inner tubes on the market providing a smooth, balanced ride with no pucker or bump like those found on other tubes Latex tubes are lighter, thinner and more flexible than a butyl tube, increasing your comfort, lowering your rolling resistance, and helping to prevent flats Includes a removable core Presta valve making them compatible with both inline and external valve extenders