DESCRIPTION
Crown 39D-MD Dura-Ace FC-9000 x 53/39
SPECIFICATIONS
Type of front gear: Double
Hollowglide: Yes
Rear number: 11
P.D.C. (mm): 110
Arms sealing: 4
Number of teeth: 39
Material: Aluminium
Compatible models: FC-9000
Compatible series: DURA-ACE 9000 Series