REI, bicycle specialty stores and dealers nationwide from October 2009 to November 2010 for about $120.
The bolts holding the front plate of the stem to the stem body can be pulled out of the threads while the bike is being ridden, causing the rider to lose control of the bike and fall.
Consumers should immediately stop using bicycles with PRO Atherton handlebar stems and take them to an authorized retailer to determine if the stem on their bike is subject to the recall. Authorized retailers will replace 18mm bolts with 21mm bolts free of charge.
For more information and to find an authorized retailer, contact Shimano American Corporation at (800) 353-4719 between 8 a.m. and 5 p.m. PT Monday through Friday, or visit the company's website at www.shimano.com
Shimano has received one report of an incident in which the rider fell and received torso and arm injuries.