Cassette: a gaggle of stacked sprockets or gears to the rear wheel of a bicycle with a rear derailleur. There is often anywhere from five to 12 gears in back on a cassette. Tire: as in typical usage. Normally pneumatic. A tubular tire is glued towards the wheel rim; most https://louisquwyz.oblogation.com/34175932/top-latest-five-engine-bike-50cc-urban-news