I think all karting around the world continues to battle the loss of senior drivers, as kids move up earlier and earlier to cars. However, the fields here are very strong this year in all classes. As we come out of the pandemic, people are very eager to race and in some classes we are seeing the largest fields we’ve seen in years. X30 is our top-level class at the national level, with the SKUSA Pro Tour and the United States Pro Karting Series being the two big touring national series.
Recently, the KA100 engine has become very popular, which has started to pull entries away from X30, as it’s much easier and cheaper to run. Cost is always a big factor here on why people chose one class over another. KA is drawing 50+ at USPKS this year, which is unheard of lately. X30 usually sees a field of 25-40 entries at big events.
Most of our big series are dedicated to one engine make, so IAME is the engine that is supported for SKUSA and USPKS. Vortex has some national-level series as well with the Rok Cup running Rok engines. The national Rotax series has gotten significantly less popular here over the past decade, as Rotax continually introduced “upgrades” and rule changes that made the class very expensive to participate in on a high level.
SKUSA also runs several shifter classes, though their competitiveness and popularity ebbs and flows.