Could this be the 2018 Polaris Axys engine?–proven reliable, tested here with stock and Jaws single pipe.
Pol Axys 800/ 840 stroker Terra Alps’ incredible pump gas hotrod
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AmSnow/ DTR Shootout! Dyno certification of stockers at Shootout 27
2017 Arctic Cat ZR8, ZR8, ZR9, Polaris Axys6, Axys 8, SkiDoo Etec6, Etec850, Yamaha Sidewinder
2017 Polaris Axys 800 breakin session, new single pipe testing
Compare bone stock to SSI stainless, SPI, BMP, and Jaws…ignition timing tweaks and questions raised!