105 4ZA Threadless Carbon Bicycle Handlebar Stems have been recalled by Ridley Bikes due to fall hazards, according to the U.S. Consumer Product Safety Commission (CPSC).

Why it’s being recalled: The bicycle handlebar stems can crack or break, posing a fall hazard.

Description: The recall involves all 4ZA 31.8 threadless bicycle handlebar stems sold as individual aftermarket components. The stems are black and have the words “4ZA Cycling Performance” painted on the carbon extension between the steerer clamp and handlebar clamp. The recalled stems range in extension lengths from 90mm to 130mm, approximately 3.5 to 5 inches.

Where it was sold: The stems were sold at specialty bicycle retailers and via websites from January 2005 through April 2010 for about $59.

Consumers should immediately stop using their bicycles and contact the bicycle retailers where the stems were purchased to obtain a free replacement stem. Other bicycle shops can handle the replacement process by contacting the manufacturer’s current distributor, Quality Bicycle Products, Inc. For more information, contact Quality Bicycle Products, Inc. (“QBP”) toll-free at (877) 745-7703 between 8 a.m. and 6 p.m. CT Monday through Friday, or visit www.ridley-bikes.com.

View the full recall on the CPSC’s website here.