
Speedwerx - Fat Daddy Single Pipe and Y-Pipe // 2025 Arctic Cat ZR / RIOT / M 858 C-TEC2 // 5000' + Elevation Only!
Speedwerx - Fat Daddy Single Pipe and Y-Pipe // 2025 Arctic Cat ZR / RIOT / M 858 C-TEC2 // 5000' + Elevation Only! Update 2/5: Very Limited Quantity Available. BACK ORDERS will be shipped late Feb Our High Elevation Fat Daddy Pipe Kit for the Arctic Cat 858 adds 8 HP everywhere from 6000 RPM to 8300 RPM, and is 2.4 LBS lighter than stock too! The pipe and y-pipe both have a bright silver ceramic coating that not only looks good, but also helps with heat retention for more consistent runability. This pipe is designed and tested for use only at 5000’+ elevation with 91+ octane non-oxygenated pump fuel. It does not require an ECU Flash, however we will be releasing a flash for those that want the cleanest and most responsive power and performance. It bolts right up using the stock hardware, and comes with a different graphoil donut for the exhaust outlet and a pipe banding kit for vibration dampening. It is compatible with the stock muffler or any of our Speedwerx mufflers, other muffler