We glue the mirrors during the assembly with a glue adapted to the conditions of use of a bicycle: resistance to vibrations, humidity and important temperature variations.

If the mirror comes unstuck, please go to our after-sales contact form (AFTER-SALES SERVICE BERTHOUD CYCLES) via the following page: https://berthoudcycles.fr/en/content/37-customer-service-after-sales-service and we will study together a solution.

Thank you to specify in your request the date of purchase and/or attach the purchase invoice of your mirror by specifying in the subject of your request "loss of mirror" and to provide us with a maximum of details.