Shimano BBR60 Ultegra / 105 Bottom Bracket / English Thread Cups DD26Rider - Easy to read optical

- Easy to read optical gear display

If you’ve got wide feet or you’re planning on stuffing thick socks in there (which you should in winter)

SRAM GX 12 speed drivetrain

The BSA 73mm Bottom Bracket is ultra-durable

5 47 12 12

Shimano BBR60 Ultegra / 105 Bottom Bracket / English Thread Cups DD26Rider - Easy to read opticalHollowTech 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 Use TLFC37 or TLFC25 in conjunction with TLFC36 adaptor tool for installation and removal For use with Ultegra 105 CX70 chainwheels