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CPSC recall · Reported February 21, 2012

Shimano Recalls PRO Atherton Mountain Bike Handlebar Stems Due to Fall Hazard

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 f…

Recall #
12113
Affected scope
213 in the United States; 83 in Canada
Compiled from official public sources by the publisher.
Verify with CPSC →
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Post Moderne Corporation, Taiwan recalled This recall involves PRO Atherton direct mount bicycle handlebar stems with the model num….

Shimano Recalls PRO Atherton Mountain Bike Handlebar Stems Due to Fall Hazard was recalled by Post Moderne Corporation, Taiwan in February 21, 2012. Reason: The bolts holding the front plate of the stem to the stem body can be pulled out of the threads while the bik…. Remedy: Consumers should immediately stop using bicycles with PRO Atherton handlebar stems and ta…. Verify recall #12113 with the CPSC before acting.

The recall

Post Moderne Corporation, Taiwan issued this CPSC recall-The bolts holding the front plate of the stem to the stem body can be pulled out of the threads while the bik….

None
agency class
February 21, 2012
reported

Sourced from official CPSC enforcement records. Verify recall #12113 with the agency before acting. Full product description, hazard, remedy, and related recalls are below.

Recall Insight

This recall's affected scope, documented in the Recall Profile below, stays within a single-region or limited-distribution footprint. Distribution information was not included in the agency filing, so consumers should assume broad potential exposure until the firm publishes point-of-sale details. Consumers holding this product should act on the agency's documented remedy above rather than relying on general guidance.

Within the same product category the archive holds 6 closely related recalls, 6 from CPSC - clustering in a narrow category often points to a systemic quality-control or supplier issue rather than a one-off defect. Always verify the recall number against the official agency record before acting.

Outdoor & Sports recalls over time

Where this recall sits in its category - 515 outdoor & sports recalls on record

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Product description

This recall involves PRO Atherton direct mount bicycle handlebar stems with the model number PRSS0049 and supplied from October 2009 to November 2010. The stem consists of a metal alloy body and front plate and four alloy bolts. The stem body is black with red markings. It has the word "PRO" in four places on the sides and the word "Atherton." The front plate is black and silver with the PRO logo in the center. The model number is located on the barcode sticker on the backside bottom of the packaging material. Stems with the following identification codes are being recalled: HH, HJ, HK, HL, IA, IC, ID, IE and IF. Some of these stems were outfitted with 18mm bolts instead of 21mm bolts. The identification code is located on the stem body where the handlebars are seated.

Reason for recall

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.

Remedy, what to do

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.

Recall Profile

Structured summary of the CPSC recall record
Attribute Value
Agency U.S. Consumer Product Safety Commission
Severity class Not classified by agency
Status Active
Recall number 12113
Date reported February 21, 2012
Date initiated February 21, 2012
Recalling firm Post Moderne Corporation, Taiwan
Affected scope 213 in the United States; 83 in Canada
Distribution Not disclosed
Official source CPSC notice →

Profile values are sourced directly from the official CPSC enforcement record. Source: U.S. Consumer Product Safety Commission.

What to do with this recall

Consumers should immediately stop using bicycles with PRO Atherton handlebar stems and take them to an authorized retailer to det…

  • Check the recall number (12113) and product description against the item you own. Search the archive
  • Confirm the current status and remedy on the official CPSC notice before acting. CPSC notice
  • Follow the documented remedy (refund, replacement, repair, or disposal) rather than general advice. What to do next

This page summarizes the official CPSC record for research and awareness; it is not legal, medical, or safety advice. Verify with the issuing agency before acting.

Frequently Asked Questions

What product was recalled? ▼
This recall involves PRO Atherton direct mount bicycle handlebar stems with the model number PRSS0049 and supplied from October 2009 to November 2010. The stem consists of a metal alloy body and front plate and four alloy bolts. The stem body is black with red markings. It has the word "PRO" in four places on the sides and the word "Atherton." The front plate is black and silver with the PRO logo in the center. The model number is located on the barcode sticker on the backside bottom of the packaging material. Stems with the following identification codes are being recalled: HH, HJ, HK, HL, IA, IC, ID, IE and IF. Some of these stems were outfitted with 18mm bolts instead of 21mm bolts. The identification code is located on the stem body where the handlebars are seated.. Recalled by Post Moderne Corporation, Taiwan. Units affected: 213 in the United States; 83 in Canada.
Why was this product recalled? ▼
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.
What should consumers do? ▼
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.
Which agency issued this recall? ▼
This recall was issued by the CPSC on February 21, 2012. CPSC does not publish a hazard classification for this recall. Recall number: 12113.
How do I report an injury from a recalled product? ▼
Report injuries to the issuing agency: CPSC at SaferProducts.gov, NHTSA at nhtsa.gov/report-a-safety-problem, or FDA via MedWatch. Document the product (photos, model/serial numbers, purchase receipts) and seek medical attention. Injury reports help agencies track hazard patterns and may strengthen enforcement actions.

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This recall: CPSC, reported February 21, 2012. Severity classes follow each agency's own taxonomy; related-recall context is computed across the full archive.

Methodology · Corrections · Archive as of August 2026