Bicycle inner tubes with PRESTA Valve. Sunlite tubes are high quality tubes at an affordable price. These tubes work on all brands and genres of bicycles. Verify the size you require. Replacement inner tube for road, recumbent, triathalon, mountain, single speed fixies, cruiser or any bicycle tire with the same tire dimensions. Be sure to verify the size of inner tube, valve type and length. Remember to always add a little air (to give the tube form) to the new inner tube before installing. This will prevent it from bunching up and/or causing a pinch flat or possibly blowing the tire off the rim (when you immediately and fully inflate) which ultimately will pop the tube.