Genuine Shimano HollowTech II bottom bracket assemble complete with left/right hand cups, spacers, inner cover and inner O-rings. The sealed cups keep out dirt and water prolonging the life of the bot...
AdvantagesReasonable value for money if you choose the right one.
DisadvantagesMy bracket isn't very well designed.
AdvantagesDesigned for the job, secure fastening.
DisadvantagesCan find alternatives, hard to buy on its own.
AdvantagesEase of use