Shimano 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 means it is packaged in a simple, no-frills manner, without the branded retail box or detailed instructions typically found in consumer-packaged products. The item itself is brand new and of the same high quality as its retail-packaged counterpart, ensuring you receive the same performance and reliability at a more affordable price.