FSA BB90 bottom brackets allow the use of FSA Cranks on BB90 frames i.e. Trek Adapter kit to use FSA cranks on BB90 Bottom Brackets Works with Alloy MegaExo Cranks Only Includes Chrome Steel Catridge Bearings and Dustcovers Item Specifications BB Thread Type BB90 Spindle Interface Type Hollowtech II,MegaExo,MegaExo
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