The Praxis Works BB30 to Shimano Conversion Bottom Bracket is a high-quality aluminium bottom bracket designed specifically for road bikes. To be used in a BB30 frame (not a press fit 30) and then to fit a Shimano crankset with a 24mm axle. Two halves screw together ensuring accurate bearing alignments and increasing stiffness of the BB. Bearings good and has both outer seals.
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