The International Series of Champions (ISOC) has addition of yet another racing organization: AMSOIL Championship Off-Road in addition to their highly successful AMSOIL Championship Snocross Series.
The 2021 AMSOIL Championship Off-Road season begins June 5-6 in Antigo, Wis. AMSOIL is Official Oil and Title Sponsor of the series, which features six stops on the schedule this summer. Several classes, including Pro 4×4 and Pro 2, will compete on the best short-course tracks in the region, including Bark River International Raceway in Bark River, Mich., and the famed Big House in Crandon, Wis.
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