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Cor PowerSports Race Series handbook, 2027 ISR Rulebook, 2027 ISR Junior Advancement form

Posted: 10/14/2026

The 2027 Cor PowerSports Race Series handbook has new items for the upcoming season in yellow, this is current as of today and will be updated during season if any series procedural changes are instituted.

Links to the ISR website are on the “Forms” page of the website.

ISR Junior advancement forms, ALL racers under the age of 18 that are wanting to compete in a class other than Juniors will need to fill out the Junior advancement form and submit that to Todd@CorPowerSports.com. Pro Factory, Pro Open, Semi Pro Factory, and Semi Pro Improved Stock racers MUST be 16 of age at the time of event AND have a Junior Advancement form on file with Cor PowerSports Race Series.

For 2027 Pro Factory Women’s will be change to Pro Am Factory Women’s class, all racers MUST be 14 of age at the time of the event AND have a Junior Advancement form on file with Cor PowerSports Race Series.

2027 ISR Junior Advancement Form on file with Cor PowerSports Race Series, you can go to the “Forms” page of the Cor PowerSports website to download the form.

2027 ISR rulebook, it is the rider’s responsibility to read and fully understand ALL of the rules for the upcoming race season but here are a few notable items:

Notice from ISR in regards to Junior class: Parents or guardians who knowingly enter a Transition class, Junior Class, with a driver who is not of the legal age to compete in the specific class, will be subject to a $500.00 fine and one year suspension. The driver also may be given a one-year suspension.

All helmets must provide full protective coverage and meet the Snell Foundation's 2025 certification standards. Helmets certified under the European ECE 22.06 standard are also approved.