The DynoCams Animal rings came into existence the same way the Flathead rings did, out of necessity. The Kart Racer needed just a Compression ring or just a Scraper Ring. When the Racer wanted just an oversized top ring the DynoCams ring made for a economical advantage. DynoCams Animal rings are also considered top of the line in performance. The DynoCams Animal Rings are still here by popular demand after all these years.