The Shimano Pres Fit SMBB7141B Road Bottom Bracket is a pressfit BB It is made for Shimano Hollowtech II cranks It has large bearings which make it durable and easy to install The sealed cups keep out dirt and water extending the life of the BB and making it maintenance free The fibre reinforced polymer construction ensures low frame noise and damage Key Features It is made for road bikes The cups are made from fibre reinforced polymer material It has sealed cups It is compatible with 865mm shells It has a 41mm cup diameter It is maintenancefree It has a 24 mm axle diameter

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