This 9-Speed front derailleur is ideal for use with a 3x9-Speed road drivetrain. Plus, it's compatible with a 52-tooth large chainring, has a 22-tooth total capacity and features a traditional clamp mount type. Key Features: Front Derailleur for 2 x 8/9 Speed For a triple chainset Full aluminium construction Features: Model No.: FD-R539-B Chainring: Triple Cassette Compatibility: 9 Speed Top Gear Teeth: 52T-42T-30T Capacity: 22T Route Type: Down Pull Chainstay Angle: 72-75 Mount Type: B: Clamp Type Chain Line: 45.0mm Band Diameter: Φ31.8mm or Φ28.6mm adapter Front Clamp Band: Anodized Cold Forged Aluminium Rear Clamp Band: Anodized Cold Forged Aluminium Outer Link: Anodized Cold Forged Aluminium Inner Link: Anodized Cold Forged Aluminium Chain Guide: Small size / Chrome Plated Steel Weight: 124g