Speedwerx High Flow Intake Kit // 2025-2026 Arctic Cat ZR / RIOT / M 858 C-TEC2

Speedwerx High Flow Intake Kit // 2025-2026 Arctic Cat ZR / RIOT / M 858 C-TEC2

• Fits 2025-2026 Arctic Cat ZR / RIOT / M 858 C-TEC2 (2027 models use a separate vent kit)
• Billet aluminum adapter with rubber seal opens up the restrictive stock plenum
• Includes three FROGZSKIN vents and installation instructions for the stock airbox
• Speedwerx reports about 5 hp from the intake alone
• An ECU tune is required when combined with the pipe, Y-pipe and head

Speedwerx part # AC858-HFI. Intended for closed-course competition use.

Not sure what fits your sled? Email kyle@freshiesbuilt.com with your year, make, model and track length.