4ZA Carbon Bicycle Stem (Ridley) – Fall Hazard (2012)
Check Your Product
According to the U.S. Consumer Product Safety Commission (CPSC)
Product
4ZA Threadless Carbon Bicycle Handlebar Stems
Brand
Race Productions NV, Belgium
Lot Codes / Batch Numbers
Not specified in CPSC notice. Check official source for details.
Product Images
Source: U.S. Consumer Product Safety Commission
Race Productions NV, Belgium is recalling 4ZA Threadless Carbon Bicycle Handlebar Stems. The hazard is: The bicycle handlebar stems can crack or break, posing a fall hazard.. Based on CPSC recall notice.
Summary derived from CPSC notice
The following details were not provided by CPSC: UPC codes.
Reason for Recall
As stated by CPSC
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.
Reported concern (CPSC)
The bicycle handlebar stems can crack or break, posing a fall hazard.
Recommended Action
Per CPSC guidance
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.
Verify this information on the official source
For complete details and official instructions, check the U.S. Consumer Product Safety Commission (CPSC) directly.
View official CPSC recall noticePage updated: Jan 6, 2026