Mizuno Corporation – June 2026
Mizuno Corporation sincerely thanks our customers for their continued trust and support. Through our investigation, conducted through the end of May 2026, we identified that in certain cases, the 6-iron, 7-iron, and 8-iron models within the Mizuno Pro M-13 Iron series may develop dents or deformation on the clubface after repeated use.
The 4-iron, 5-iron, 9-iron, pitching wedge (PW), and gap wedge (GW) models within the Mizuno Pro M-13 series incorporate different constructions and demonstrate strong durability. To date, no instances of clubface damage have been observed in these models.
We ask customers using the affected 6, 7, or 8-irons to carefully inspect the clubface for any signs of denting or deformation. If you notice any such damage, please visit the following link for instructions on how to proceed.
Mizuno Pro M-13 Replacement / Exchange Form
To uphold our commitment to product quality and customer satisfaction, Mizuno is offering the following options to affected customers:
- Clubhead Replacement:
Customers may elect to receive replacement M-13 6-, 7-, and 8-irons. Mizuno has identified the cause of the issue and is currently manufacturing updated M-13 6-, 7- and 8- iron clubheads to address the condition. Updated replacement heads will feature a small “●” laser mark positioned to the right of the “CHROMOLY” marking on the hosel for identification purposes.
- Exchange Offer:
Customers seeking an immediate alternative may choose to exchange their Mizuno Pro M-13 set for a model from our Mizuno Pro S-1, S-3, M-15 or JPX 925 Forged iron lineups. This option provides access to other premium forged irons while minimizing disruption to play. This exchange program will only be available until August 14, at which point any warranty or replacement request will be handled via option (1).
For additional information on how to proceed and further details regarding the options outlined above, please visit: Mizuno Pro M-13 Replacement / Exchange Form
Mizuno remains committed to the highest standards of product quality and customer service and apologizes for any inconvenience this issue may cause. We are conducting a thorough review of this matter and will apply the findings to strengthen our quality assurance processes, ensuring we continue to deliver the performance, reliability, and craftsmanship our customers expect.
Thank you for your understanding, loyalty, and continued support of Mizuno.
Mizuno Corporation