Technical Bulletins (TBs) are VERY IMPORTANT!! You must read and understand all TBs that relate to your Gocycle. When a new TB is created, it is sent out to the registered owner email address. TBs will alert you about any new important service or safety information about your Gocycle. We recommend that you check gocycle.com/safety every three months to check if there are any new TBs relating to your model Gocycle. If your Gocycle frame number is referenced in the Technical Bulletins table, please read the bulletin for important information.