ACS 68/73 mm Bicycle Bottom Brackets
The bottom bracket shell width is the width, in millimeters, of the frame where the bottom bracket is mounted.
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Showing 2 products:
ACS Crossfire BB Cup Set, Red 
BuyPART NUM 351479
Forged and CNC-machined aluminum with precision sealed bearings for 2-pc cranks and 24mm spindles BSA 1.37"x24T for 68/73mm shells … read more
Ships Free16% offretail $54.95 your price $45.99 + ships free
BuyPART NUM 351479 
ACS Crossfire BB Cup Set, Gold BuyPART NUM 824658
Forged and CNC-machined aluminum with precision sealed bearings for 2-pc cranks and 24mm spindles BSA 1.37"x24T for 68/73mm shells … read more
your price $49.95 + ships free
BuyPART NUM 824658 These models are available for online purchasing and can be shipped directly to you.
Length
The bottom bracket shell width is the width, in millimeters, of the frame where the bottom bracket is mounted.
Bottom brackets must fit the frames interface type. For example, an english threaded bottom bracket can only be installed on a frame that accepts english threading.
FSA’s MegaExo spindle is 24mm in diameter, uses a “Square Spline”. 
FSA’s MegaExo Light spindle is 24mm in diameter, uses an “Arc Spline,” and is used on K-Force Light, SL-K Light, and the Team Issue cranks.
Shimano Hollowtech II is Shimano's 24mm spindle standard.
RaceFace EXI bottom brackets are for 24mm spindle cranks.
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