You can fit these bottle cage adapters to any circular-section tube on your bike (up to 35 mm in diameter), such as the seatpost, steerer tube, or top tube of your frame, allowing you to install a bottle cage in the most accessible position or carry extra drinks on hot days. The single-clamp design of the FCAS bottle cage adapter allows it to be installed on shorter tube sections, while the double-clamp design of the FCAD bottle cage adapter provides extra stability for your bottle cage.
| P/N | Material | Compatibility | Clamping style | Maximum steerer tube diameter | Weight | Colors |
|---|---|---|---|---|---|---|
| FCAD1 | CNC alloy | Birdy 2 / C / P Line | Double clamp to the steerer tube | 35 mm | 53 g | Black, Gold, Silver, Matte red, Matte bronze, Matte champagne |
| FCAD2 | CNC alloy | Birdy 3 / T / G Line | Double clamp to the steerer tube | 40 mm | 57 g | Black, Red, Gold, Silver |
| FCAS1 | CNC alloy | Birdy 2 / C / P Line | Single clamp to the steerer tube | 35 mm | 49 g | Black, Gold, Silver, Matte red, Matte bronze, Matte champagne |
| FCAS2 | CNC alloy | Birdy 3 / T / G Line | Single clamp to the steerer tube | 40 mm | 50 g | Black, Red, Gold, Silver |


