The racing series you've probably never heard of. Aussie Race Cars everybody!
Using a 4-cyl 1.2L Yamaha engine that revs all the way to 12k RPM, these 450kg cars race on the same weekends the V8 Supercars race. An absolute pleasure to watch, and the battles are intense.
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Just beause it’s a smaller racing series, doesn’t mean it’s not competitive
https://www.youtube.com/watch?v=YWAMhn69P_s