Bike Friday Bilenky Cycle Works Bohemian Bicycles Burley Design (now out of production) Calfee Design Cannondale Bicycle Corporation Co-Motion Cycles Cyfac International Dawes Cycles Gazelle Hase Spezialräder (Hase Bikes) KHS Bicycles Órbita bicycles Santana Cycles Schwinn Bicycle Company [20] Torker Trek Bicycles