Genuine Shimano HollowTech II bottom bracket assembly. Compatible with 68 mm and 73 mm shell. Maintenance free.
Shimano Ultegra HollowTech II Bottom Bracket - BB-R60 - 70mm Italian
Shimano Ultegra HollowTech II Bottom Bracket - BB-R60 - 68mm English
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Shimano - FCM580 Security Plate for Shimano Hollowtech II left hand crank arms.
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Shimano BB-MT801 XT HollowTech II Bottom Bracket - 68/73mm
