Challenge, Seamless Latex Inner Tube, Tube, Presta, Derailleur But unless your bike was

But unless your bike was designed with an integrated solution

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

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

Rally power meters have undergone rigorous testing to ensure total reliability

Challenge, Seamless Latex Inner Tube, Tube, Presta, Derailleur But unless your bike wasChallenge 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