IN CASE OF SERVICE
First, please check by yourself what could be wrong. In almost every case, noises or strange sounds do not come from the inside of a Pinion gearbox. That means, many things can be solved by yourself. This list might help you with troubleshooting, or just contact your local dealer.
CONTACT YOUR DEALER
If you suspect a defect at the gearbox, please contact your local bicycle dealer or the bike manufacturer, if you purchased your bike directly from him (direct sales). They will check your gearbox and might send it to the Pinion Service Center in your sales region.
SENT BACK YOUR GEARBOX
If the local dealer workshop decided that your gearbox needs to be returned, please consider a copy of the receipt and the filled out Pinion warranty card. In case you managed the intended oil change yourself, please consider the receipts of the Pinion oil change kits.
Then, your dealer will fill in the Pinion-service form, and sent the gearbox to the Pinion Service Center.