Shimano UN54 Bottom Bracket - OEM Fwidth_2.4" Liner: High impact absorbing EPS

Liner: High impact absorbing EPS foam (expanded polystyrene)

3/8" pin is for the 1

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

Mountain bike mount

Shimano Tiagra FC-4703 Chainring

Shimano UN54 Bottom Bracket - OEM Fwidth_2.4" Liner: High impact absorbing EPSShimano 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