SPEEDWERX Turbocharger Kit // 2025-2026 Arctic Cat M 858 C-TEC2

Speedwerx Turbo Kit // 2025-2026 Arctic Cat M 858 C-TEC2 

Our Turbo Kit comes complete and ready to install without any major chassis modifications. Comes with instructions and step by step video instructions will be available on our website and YouTube page as well. Kit utilizes stock coolant and oil lines to feed turbo. Fueling is controlled from a re-flashed ECU and standalone G3 controller box that controls the secondary fuel injectors. As of now we are the only aftermarket company running 4 injectors, but both Polaris and Ski-doo run them on their turbo sleds direct from the factory. This provides better throttle response, better acceleration, and better power. Our aluminum charge box comes pre-assembled with a high flow secondary air inlet valve to for improved throttle response and deep snow drivability. We also send a hood upgrade with the kit to remove most of the internal stock hood intake parts. Last but not least, we include our complete clutch kit with our adjustable weights pre-set to our baseline specs.  

This kit is designed to run on non-oxy 91 octane premium pump gas at all elevations and produces 215+ hp on pump gas at 8300-8500 rpm.  

Key Features and Parts Included: 

• Super Efficient Xona Turbo with Low Intake / Charge Temps
• Tial Wastegate
• Stainless Steel Exhaust Components
• Altitude Compensating Secondary Injectors
• Secondary Injector Controller and Harness
• Dual MAP Sensors
• Aluminum Charge Box with High Flow Secondary Intake Valve and Piping
• Ecu Flash
• Oil Line Adapter
• Coolant Line Adapters
• Hood Intake Upgrade Kit with Bypass Valves for Improved Deep Snow Runability
• Complete Clutch Kit