FD-R52H / FD-R538H / FD-R539H

Front Derailleur for double chainring 2 x 8/9s, clamp type 31.8mm, for 20″ frame, chainstay angle 70 ~ 77 degree

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Technical Specifications

Model No.FD-R52HFD-R538HFD-R539H
Chain RingDouble
Cassette Compatibility8 / 9 Speed8 Speed9 Speed
Top Gear Teeth50-56T
Route TypeDown Pull
Chainstay Angle70-7772-75
Mount TypeBand
Chain Line43.5mm45.0mm
Band DiameterΦ34.9 / Φ31.8 (1)
Front Clamp BandAluminum cold forged / anodized
Rear Clamp BandAluminum cold forged / anodized
Outer LinkAluminum cold forged / anodized
Inner LinkAluminum cold forged
Chain GuideSmall size / Steel C.P
Remarks(1) -Clamp spacer (SM-R28) allow the derailleur to be Φ28.6mm frame tube. Without ring spacer the derailleur mounts to Φ31.8mm frame tube.

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