High Elevation Kits are available now! Low Elevation Kits are in the werx- stay tuned for the release date later this season pending testing on the snow.

The Speedwerx Hypershift Clutch Kit for the 2025 Arctic Cat M 858 was developed and tested by the same team of people that Factory Team Arctic Cat trusts and uses!

The Speedwerx Hypershift Clutch Kit for the Arctic Cat ZR 858 was developed and tested by the same team of people that Factory Team Arctic Cat trusts and uses!

NEW RELEASE- Pre-Order now for projected shipment mid-April.

The Speedwerx Hypershift Clutch Kit for the Arctic Cat ZR and Riot 858 was developed and tested by the same team of people that Factory Team Arctic Cat trusts and uses!