SPI Lightweight Carbon Muffler, Arctic Cat Catalyst 858

Straightline Performance carbon fiber and stainless steel lightweight mountain muffler for Arctic Cat Catalyst 858 models. Designed specifically for mountain riding, the ultra-light construction improves maneuverability, sidehill control and overall sled responsiveness. The genuine carbon fiber body provides excellent heat resistance, while stainless steel components add durability and corrosion resistance.

The muffler produces a deep, aggressive performance tone and installs as a direct bolt-on replacement. No fuel calibration changes are required according to the manufacturer. As a serviceable carbon fiber component, regular inspection and periodic repacking or rebuilding may be required depending on use.

Fitment: Arctic Cat Catalyst 858, M 858, Riot 858 and ZR 858, model years 2025–2027.
Weight: 3.70 lb / 1.68 kg
Dimensions: 21 × 11 × 7 in / 53.34 × 27.94 × 17.78 cm
Package includes: Carbon fiber muffler, stainless steel components and installation instructions.