- openbook Competition Bulletin 2019-5: Age Change to Schoolboy Jr. Class TimeMay 22, 2019 Age Change to Schoolboy Jr. Class
- openbook
Competition Bulletin 2019-4: Revised 2019 ATVMX Racer Order Available TimeApril 3, 2019 Revised 2019 ATVMX Racer Order Available - openbook Competition Bulletin 2019-3: 2019 Rules for Professional ATV Motocross Competition Now Posted TimeFebruary 22, 2019 2019 Rules for Professional ATV Motocross Competition Now Posted
- openbook Competition Bulletin 2019-2: Updated 2019 Production Class Clarification Chart Posted TimeFebruary 22, 2019 Updated 2019 Production Class Clarification Chart Posted
- openbook Competition Bulletin 2019-1: FINAL 2019 ATVMX National Classes and Supplemental Rules TimeJanuary 4, 2019 FINAL 2019 ATVMX National Classes and Supplemental Rules
- openbook Competition Bulletin 2018-9: Tentative 2019 ATVMX National Classes, Supplemental Rules and Production Stock Chart Available for Public Comment TimeDecember 20, 2018 The Tentative 2019 ATVMX National Classes, Supplemental Rules and Production Stock Chart are now available for inspection…
- openbook Competition Bulletin 2018-8: Request for Rule Changes for 2019 and Riders Meetings Scheduled for Banquet TimeNovember 10, 2018 Request for Rule Changes for 2019 and Riders Meetings Scheduled for Banquet.
- openbook Competition Bulletin 2018-7: 2018 ATVMX National Championship Class Top 10 Now Available TimeSeptember 4, 2018 2018 ATVMX National Championship Class Top 10 Now Available
- openbook Competition Bulletin 2018-6: Updated Championship Points Drops TimeJune 18, 2018 With the cancelation of the Muddy Creek ATVMX, it is necessary to revise the Class Championship drops.
- openbook
Competition Bulletin: 2018-5: Muddy Creek ATVMX National Canceled TimeMay 29, 2018 Muddy Creek ATVMX National Canceled - openbook Competition Bulletin 2018-4: Foreign Rider Eligibility Requirement TimeApril 10, 2018 Foreign Rider Eligibility Requirement
- openbook Competition Bulletin 2018-3: Tentative 2018 ATVMX Practice and Race Orders Available to Public Comment TimeMarch 13, 2018 Tentative 2018 ATVMX Practice and Race Orders Available to Public Comment
