The SHIMANO SORA R3030 front derailleur is compatible with wide ratio, 3x9 speed gear combinations.

Specifications

Rear speeds: 9
Front speeds: 3
Action: Down Swing
Mount Clamp Band (mm): 28.6 X (w/ S size adapter)
Mount Clamp Band (mm): 31.8 X (w/ M size adapter)
Mount Clamp Band (mm): 34.9
Chain line (mm): 45
Chain stay angle (deg.): 63-66
Top gear teeth: 50T
Total capacity: 20T
Applicable top-mid tooth difference: 11T
Angled clamp band design