The Xenon Expert XL features a full parts overhaul. The mid-tier Xenon line is a game changer with all bikes being Disc-ready allowing you to convert them to a full disc-brake setup with our aftermarket disc brake kit. We spared no details here, from forged disc-ready dropouts with tensioners, our very own aftermarket Oxygen Tires and Clipper Expert Rims, the Xenon is a natural born winner. Now available in both a 19.5" and a 20.5" toptube length.