FSA Platinum Isis Bottom Bracket

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All-purpose - strong and stiff bottom bracket make this a good choice for most mountain bike applications. Chromoly self-extracting crank bolts for easy removal and installation. Features narrow integrated bearing cups. Fits most current ISIS-Drive ATB crankarms. Note: not suitable for carbon cranks or road cranks. Titanium-nitride coated isis-type spindle and integrated large ball bearing design.