Shimano Ultegra HollowTech II Bottom Bracket - BB-R60 - 68mm English Item Description You are bidding on brand new Shimano Ultegra HollowTech II Bottom Bracket - BB-R60 Shimano Ultegra BB-R60 Cups - HollowTech II integrated bottom bracket uses a wider bearing placement and larger axle diameter for increased stiffness and efficiency HollowTech II integrated bottom bracket seal design has minimal bearing interface ensuring smooth rolling and increased durability English Thread - 68mm Shell Thread - 1.370" x 24 TPI The Shimano BBR60 Ultegra level Bottom Bracket English Thread Cups use Shimano HollowTech II technology which uses a wider outer bearing placement and larger axle diameter for increased stiffness and efficiency. While it's sealed design has a minimal bearing interface ensuring smooth rolling and increased durability. The latest version of HollowTech II used here is lighter and has 50% lower rotational friction than previous version. HollowTech II integrated bottom bracket uses a wider bearing placement and larger axle diameter for increased stiffness and efficiency HollowTech II...