Duralumin/steel double chainring for 8/9/10S bikes on 170 mm duralumin crank and with integrated 24mm axle (Hollowtech II compatible) to BSA threaded center. Material: cranks - Al 60601-T6 / outer chainring - 3mm duralumin + inner chainring - steel / axle - CrMo. Ramps on the back of the outer chainring for better chain passage when shifting Chainline 48.5 mm. Q-factor - 176 mm. BCD = 104/64 mm Weight: chainrings + right crank = 591 g / left crank + bolt = 295 g OEM packaging
The BSA bottom bracket with bearings can be purchased separately - code 001661.
Product ID: 23860


