Challenge Latex Inner Tube Size:700 x 33-40c SpeedCore is an innovative tubeless-ready

SpeedCore is an innovative tubeless-ready construction that consists of a thin air-tight layer of rubber compound infused of aramid particles

40" WT tubeless ready tires

These wedges are designed to create a tilting option for aerobar brackets that do not offer the option to tilt

Unique features include an innovative folding pivot to store and fold with ease

and the CeramicSpeed Bearings inside guarantee 3-5 times longer longevity compared to commonly used standard pulleys on the market

Challenge Latex Inner Tube Size:700 x 33-40c SpeedCore is an innovative tubeless-readyChallenge 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. The tube also includes a removable core Presta valve making them compatible with both inline and external valve extenders.