Open Cycle
Open is a manufacturer of performance gravel bike and road bike frames based in Basel. Founded by Andy Kessler and Gerard Vroomen in January 2012, the company debuted with a single model, the O-1.0. It was claimed to be the lightest 29-inch production hard tail on the market. The Company's current line-up includes two all-road / gravel frames, the OPEN U.P. and OPEN U.P., a pure gravel frame OPEN WI:DE, and a classic road bike frame, the OPEN MI.ND.
Special editions
Open have sold frames with paint designs created in collaboration with various other companies.| Collaboration | Frames | Other notes |
| Assos | 40 | |
| Yeti Cycles | 50+ | |
| DT Swiss | 30 | |
| Rapha | Only sold to Rapha Cycle Club members | |
| ENVE | 50 | Sold as a set with various Enve components. All frames were misnumbered 3/30 |
| Omata | 20 | Sold as a set with the Omata One cycling computer |
| SRAM AXS | 40 | Only sold as a complete bike |
| René Herse | U.P.P.E.R. | Announced. October 28, 2022. Pre-orders until 2024-07-28 |
| Camille McMillan | OPEN E.A.R. |