Challenge, Seamless Latex Inner Tube, Tube, Presta, Derailleur yet your bottles are easy

yet your bottles are easy to retrieve and insert

The Adaptive saddle padding is crafted by Carbon® using their revolutionary Digital Light Synthesis™ technology

Rally power meters have undergone rigorous testing to ensure total reliability

Hand made in our Yorkshire workshop

Challenge, Seamless Latex Inner Tube, Tube, Presta, Derailleur yet your bottles are easyChallenge 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