Shimano UN54 Bottom Bracket - OEM Fwidth_2.4" The latest manufacturing methods coupled

The latest manufacturing methods coupled with the use of the highest-grade materials ensure the closest tolerances are adhered to

Adjustable swingarm and versatile mounting system

ANT+®: Yes

thanks to a vulcanised natural rubber top for flexible performance requiring no breaking in period

Extra strong

Shimano UN54 Bottom Bracket - OEM Fwidth_2.4" The latest manufacturing methods coupledShimano UN54 Bottom Bracket OEM Advisory* This product is OEM packed and not in original manufacturers packaging. Square Taper Spindle, Hollow Pipe BB Shell, Same Rotary Structure as BB UN73, Thin Body for Clearance for Cable Guide Fixing Bolt or Internal Routed Electric Wires. Square taper BB Replaces models UN53 and UN73 Does not include crank bolts Please note: This item is OEM (Original Equipment Manufacturer) but not in original packaging. This