2025 Arctic Cat 858 stock dyno test pre and post actual breakin
we compare the Catalyst 858 torque and HP curve to the 850 Polaris and 850 SkiDoo
we compare the Catalyst 858 torque and HP curve to the 850 Polaris and 850 SkiDoo
Mod stock muffler, quiet Trail Lightweight, L2 muffler all tested with stock ECU and Stages 2.0.2.5 and 4.0
Tested stock and with HotRod Sled Shop reflashes, new Jaws exh w/ stock ECU and HRSS Jaws reflashes