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ISIS cranks have been around a long time, and they're still a great design. If you've got one, keep it in top working condition with these quality crank bolts from FSA. - ISIS-compatible - M12

Tight tolerances and precise torque specs mean precision parts like this MegaExo 12 Left Arm Crank Bolt need to be replaced from time to time. Make sure the heart of your drivetrain is secure, and pick up a spare or two today.