Wanna go slideways? The American Historic Racing Motorcycle Association is here to help, with five new classes for the 2021 National Vintage Dirt Track Series.

First up, there are two classes for more recent production bikes, Modern Classic Singles and Modern Classic Twins. According to the AHRMA presser, “Modern Classic Singles is open to an air-cooled single cylinder 4-stroke powered machine with no restrictions on displacement, chassis or running gear.” As for the twins class, “Modern Classic Twins is open to any air-cooled twin cylinder 4-stroke powered machine with no restrictions on displacement, chassis or running gear.” Note that while these are for “modern” bikes, they’re aimed at air-cooled machines, so don’t expect to show up on your Versys 650 and be welcomed with open arms.

Then there are the new vintage categories. The AHRMA has Vintage Lightweight (“open to any motorcycle built before 1996, with a two-stroke or four-stroke engine displacing less than 450cc, with no restrictions on chassis or running gear“) and Vintage Heavyweight (“open to any motorcycle built before 1996, with a two-stroke or four-stroke single or multi-cylinder engine displacing 450cc or larger, with no restrictions on chassis or running gear“). There’s also a new “Spanish” class, for Bultaco, OSSA and Montesa motorcycles with air-cooled engines displacing up to 360 cc.

The AHRMA says these new series are not official championship classes, and they’re not in the 2021 AHRMA handbook, but these classes will be at all 2021 AHRMA dirt track events, with competitors earning trophies and championship points. For more details, see the National Vintage Dirt Track Series schedule, class rules and entry forms at the AHRMA website.

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