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An ideal option for many bike types with square taper type chainsets, Shimano’s UN55 bottom bracket will give you long lasting, smooth operation mile after mile. Built with accurately machined bearings that rotate inside a sealed cartridge, it prevents any water or dirt ingress. This means it requires no maintenance so you can keep riding smoothly on every ride.
A 2-year warranty is offered with all Shimano products from Chain Reaction Cycles (3 years on Dura-Ace and XTR products).
Buy Shimano Footwear from Chain Reaction Cycles, the World's Largest Online Bike Store.
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