FD 318 vs FD 349: specs compared
Updated 05 September 2026.
3
specs differ
FD 318 and FD 349 differ on 3 specs: mount / band size, designation, typical frames.
| Spec | FD 318 | FD 349 |
|---|---|---|
| Mount / band size | 31.8 mm (1 1/4 in) seat-tube clamp | 34.9 mm (1 3/8 in) seat-tube clamp |
| Designation | 31.8 mm band | 34.9 mm band |
| Typical frames | the most common round-tube clamp size on aluminium road and touring frames | oversized aluminium and some mountain frames with a large-diameter seat tube at the clamp |
Questions and answers
How do FD 318 and FD 349 compare?
FD 318 and FD 349 differ on 3 specs: mount / band size, designation, typical frames.