Hello everyone, as many of you have bought GPR exhausts and someone had a problem, the GPR told me to tell you the name and address of the person deals with the replacement of warranty parts. So please write to: Massimo Davi claim@gpr.it I will continue to act as a spokesperson in the event you are unable to solve a problem, but the person I have pointed out is the person responsible for the problems after the sale. Hello to all