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![Shimano UN54 Bottom Bracket - OEM Silver 73 x 107mm - English Thread](http://cambriabike.com/cdn/shop/products/41b1a3rEDdL._AC.jpg?v=1653401626&width=1946)
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Shimano
Shimano UN54 Bottom Bracket - OEM
Shimano UN54 Bottom Bracket - OEM
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Product ID: GM070820-47
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Shimano UN54 Bottom Bracket - OEM
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
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![Shimano UN54 Bottom Bracket - OEM Silver 73 x 107mm - English Thread](http://cambriabike.com/cdn/shop/products/41b1a3rEDdL._AC.jpg?v=1653401626&width=1445)
![Shimano UN54 Bottom Bracket - OEM](http://cambriabike.com/cdn/shop/products/41s1VK_N-gL._AC.jpg?v=1653401626&width=1445)
![Shimano UN54 Bottom Bracket - OEM](http://cambriabike.com/cdn/shop/products/rack_dcdef450-8ef1-4414-8e0d-c7d00a32ca4b.jpg?v=1640774020&width=1445)