Front chainring specifications :
type: Double.
COMPATIBLE MODEL: FC-R8100, FC-R8100-P.
COMPATIBLE SERIES: ULTEGRA R8100.
PRODUCT SPECIFICATIONS.
MODEL NO: WP-Y0NG36000.
SERIES: ULTEGRA R8100 Series.
Chain Ring Type: 36T.
Speed: 12-speed.
SHIMANO FC-R8100 CHAINRING 36T-NH 12 SPEED
VAT included0
8989