Description
VITTORIA Rally Tubular Tyre Side Wall:Gumwall Ball Bearings Grade 3 Silicon Ball Bearings Grade 3 Silicon Nitride (Si3N4) Ball Bearings Bearing Cage PEEK Rings Ceramic Inner and Outer Rings Pulley Wheel CNC Aluminum Shields PTFE Teeth Count 11 Teeth Per Wheel Drivetrain Compatibility Compatible with all SHIMANO SRAM 9 11 Speed drivetrain series high performance racing weapons for the miles that really count – those between start and finish lines