Elevate your ride with the Arctic Cat Catalyst 858 Powder-Lite Muffler. Engineered for the backcountry rider who demands maximum weight savings without sacrificing power, this muffler delivers a crisp, aggressive exhaust note and the durability of full stainless steel construction. Dyno-tested and field-proven to dominate the mountain.

Performance & Engineering Highlights

• Race & Mountain Style: Specifically tuned for the Catalyst 858 platform to provide a lightweight, high-performance exhaust profile.
• Dyno-Proven Power: Developed through rigorous testing to ensure maximum flow; unlike many aftermarket options, this muffler will not lose horsepower.
• Extreme Weight Reduction: Shed a massive 13.75 lbs off your machine! This lightweight powerhouse weighs only 4.75 lbs compared to the bulky stock unit.
• Maintenance-Free Design: Features a specialized internal baffle system with no packing to ever wear out or change sound, ensuring consistent performance for the life of the muffler.

Premium Stainless Steel Construction

• All Stainless Steel Design: Manufactured from high-grade stainless steel to resist corrosion and withstand the highest exhaust temperatures.
• Great Fit and Finish: Precision craftsmanship ensures a clean, professional look under the hood.
• Durable Mounting Brackets: Includes heavy-duty stainless mounting hardware for a secure fit in the roughest terrain.
• Easy Installation: Bolt-on design that utilizes factory mounting locations for a seamless upgrade process.

Upgrade to the "Munchie Muffler" – Hot Food on the Hill!

Want to enjoy a hot meal at the top of the mountain? Check out our Arctic Cat Catalyst 858 Stainless Steel Powder-Lite "Munchie Muffler." It’s the exact same high-performance exhaust, but with an integrated food heating system.

• Integrated Heating Canister: Comes with a stainless steel cup, lid, and secure latch to cook or warm snacks while you ride.
• Minimal Weight Gain: Even with the food heater hardware, the Munchie version weighs only 5.85 lbs—still saving you over 12.5 lbs over stock!
• Same Great Quality: Features the same dyno-proven internals and premium stainless steel construction as our standard Powder-Lite.

Click here to view the Arctic Cat 858 Munchie Muffler variant.