Shimano BBR60 Ultegra / 105 Bottom Bracket / English Thread Cups DD26Rider SRAM GX 12 speed drivetrain

SRAM GX 12 speed drivetrain

Lightweight breathable synthetic uppers

The BSA 73mm Bottom Bracket is ultra-durable

0 is also 10% harder than the previous 11Storm compound

Shimano BBR60 Ultegra / 105 Bottom Bracket / English Thread Cups DD26Rider SRAM GX 12 speed drivetrainHollowTech 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