Should be valid in the US yes, where it was bought. As others have said best would be to contact them directly in the US and find out what they can do. Will obviously depend on what happened to the helmet and what their terms are. From their helmet manual : "SPECIALIZED NO-FAULT HELMET CRASH POLICY For helmets purchased Internationally, please contact the Authorized Dealer or Distributor in your local market. For helmets purchased in the USA, please contact your Specialized Dealer. Visit WWW.SPECIALIZED.COM for the latest information." "ONE YEAR LIMITED WARRANTY The following information pertains to helmets purchased in the USA only. For warranty information outside the USA, please contact the authorized Specialized dealer or distributor in your local market. Specialized Bicycle Components, Inc. warrants to the Original Purchaser of this product that the product is free from defects of material and workmanship under normal use and service for a period of one (l) year from the date of the original purchase. If within one (l) year from the date of the original purchase, this product is found to be defective in material or workmanship under normal use or service, Specialized Bicycle Components, Inc. will, at its sole option, repair or replace the product without charge, provided that the Original purchaser returns the product to an Authorized Dealer indicating the specific reasons for returning the product and proof of date of purchase. Specialized does not warranty any helmet damaged by heat. THIS WARRANTY DOES NOT APPLY TO, AND IS VOID AS TO, EFFECTS OR PHYSICAL DAMAGE RESULTING FROM ABUSE, NEGLECT, IMPROPER REPAIR, IMPROPER FIT, ALTERATIONS, MODIFICATIONS, OR USE CONTRARY TO THAT INTENDED BY THE MANUFACTURER. SPECIALIZED DISCLAIMS ALL WARRANTIES EXCEPT THE WARRANTY SET FORTH IN THIS SECTION, AND EXPRESSLY DISCLAIMS THE WARRANTIES OF FITNESS FOR PARTICULAR PURPOSE AND MERCHANTABILITY. SPECIALIZED BICYCLE COMPONENTS, INC. SHALL NOT BE LIABLE FOR ANY INCIDENTAL OR CONSEQUENTIAL DAMAGES ARISING FROM ANY BREACH OF ANY EXPRESSED OR IMPLIED WARRANTY ON THIS PRODUCT. THIS WARRANTY IS EXCLUSIVE AND IN LIEU OF ALL OTHER WARRANTIES, EXPRESSED OR IMPLIED, AND ALL OTHER REMEDIES GUARANTEES OR LIABILITIES ARISING BY LAW OR OTHERWISE. No person or representative is authorized to assume any liability on behalf of Specialized Bicycle Components, Inc., in connection with the sale of this product. Some states do not allow the exclusion or limitation of incidental or consequential damages or limitations on how long an implied warranty lasts, so the above limitation or exclusion may not apply to you. This warranty gives you specific legal rights, and you may also have other rights which vary from state to state."