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- CARTRIDGE BB SET, DA-TRACK(98N) BB-7710 SPLINED TYPE AXLE BSA 68-109.5MM NJS-TYPE IND.PACK
- OCTALINK BB
- 8-spline interface between bottom bracket and crank arm
- Better meshing and power transmission
Original Shimano parts guarantees that all components work perfectly for optimum performance and maximum safety and longevity.
SHIMANO Dura Ace Octalink Track Bicycle Bottom Bracket - BB-7710 68X109.5-mm B008Z9DZ32