- openbook Competition Bulletin 2018-2: Tentative 2018 ATVMX National Classes and Supplemental Rules Revised and ReissuedTimeJanuary 8, 2018Tentative 2018 ATVMX National Classes and Supplemental Rules Revised and Reissued
- openbook Competition Bulletin 2018-1: Tentative 2018 ATVMX National Classes, Supplemental Rules and Practice Order Available to Public CommentTimeJanuary 1, 2018Tentative 2018 ATVMX National Classes, Supplemental Rules and Practice Order Available to Public Comment
- openbook Competition Bulletin 2017-7: Request for Proposals: 2018 ATVMX Supplemental Rules and Class StructureTimeNovember 6, 2017Request for Proposals: 2018 ATVMX Supplemental Rules and Class Structure
- openbook Competition Bulletin 2017-6: Updated Championship Points DropsTimeJune 22, 2017Updated Championship Points Drops
- openbook Competition Bulletin 2017-5: ATVMX Race Orders ClarificationTimeMay 10, 2017ATVMX Race Orders Clarification
- openbook Competition Bulletin 2017-4: High Point ATVMX National CanceledTimeMay 1, 2017High Point ATVMX National Canceled
- openbook Competition Bulletin 2017-3: High Point ATVMX National PostponedTimeApril 25, 2017High Point ATVMX National Postponed
- openbook Competition Bulletin 2017-2TimeNovember 23, 2016FINAL 2017 ATVMX National Classes and Supplemental Rules
- openbook Competition Bulletin 2017-1TimeNovember 10, 2016Tentative 2017 ATVMX National Classes and Supplemental Rules
- openbook Competition Bulletin 2016-8TimeSeptember 22, 2016RFP: Request for Proposals: 2017 ATVMX Supplemental Rules and Class Structure
- openbook Competition Bulletin 2016-7TimeMay 17, 2016AMA National Advancement System and Penalty for Riding Out-of-Class
- openbook Competition Bulletin 2016-6TimeApril 6, 20162016 Girls Class Revised