For situations where aerodynamics is the priority, the new ULTEGRA R8170 C60 wheelset features an all-carbon, 21 mm internal, tubeless compatible rim and a super-fast cup and cone bearing hub that is compatible with both 12 and 11-speed cassettes.
Specification:
60 mm height full carbon rim
Internal rim width: 21 mm
Shared rim profile with R9200 DURA-ACE wheels
Internal rim width: 21 mm for optimal tire support.
Improved aerodynamics
