Shimano XT BB-MT801 Bottom Bracket BSA Threaded, One Size

If every bump in the trail means a creak from the center of your bike as of late, retire your old bottom bracket and replace it with the Shimano XT BB-MT800 Bottom Bracket. Shimano puts the best of its workhorse craftsmanship into this bottom bracket, using durable seals and small ball bearings that will keep your cranks spinning from flowy climbs to rugged descents with ease.