DETAILS: 2010-2012 Cannondale Bad Boy and Bad Girl commuter bicycles. They were sold in black. Only bicycles with date codes beginning with P, Q and RB through RL are included in this recall. The date code is located on the bottom of the bicycle fork. The frame is matte black. A Cannondale decal can be found on the downtube.

WHY: The bicycle’s fork axle can crack, posing a fall hazard.

INCIDENTS: The firm has received 30 reports of the bicycle’s fork axle cracking, including a report of a fall that resulted in a concussion and bruising.

HOW MANY: About 3,100 from June 2010 through December 2014.

FOR MORE: Call Cannondale at 800-245-3872 from 9 a.m. to 6 p.m. ET Monday through Friday, by email at custserve@cyclingsportsgroup.com or online at www.cannondale.com and click on Safety Notices and Recalls at the bottom of the main page for more information.