Shimano Dura-Ace R9100 Hollowtech II Italian Bottom Bracket MFPN=300-1000-060 Comes with a CO2 head

Comes with a CO2 head and tool storage tube that fits a spare chain link and a CO2 cartridge (16g/20g/25g) or Klic HV hand pump (sold separately) keyword search SOS Tool

Includes tools and foam organizer

ProLock hidden spoke nipples help to reduce air drag around the rim

CNC machined aluminum center is stiff and lightweight to offer the advantages of a thicker fixed disc without the weight penalty

5 mm Reach 410

Shimano Dura-Ace R9100 Hollowtech II Italian Bottom Bracket MFPN=300-1000-060 Comes with a CO2 headShimano Dura Ace BB92 BB9000 Hollowtech II Bottom Brackets Bottom Bracket Shell I. D. 36 BB Frame Interface Italian BB Shell Width (mm) 70 Weight 65 Spindle Interface Type Shimano Hollowtech II Defined Color Black Type Italian