This muffler has special thermal barrier and internal packing that keeps it very cool on the outside

professional installation

Our Engineering department started off analyzing the competition

Instead of venting to the atmosphere

M 8000 Mountain Cat Alpha One w/154" Track • 2019-2024

STM Inner Primary Sheave / ProR Category_Default Category/SLED/Arctic Cat/600\/6000 Race Sled '08-16 This muffler has special thermalReplacement fixed sheave for the stock Pro R (4 Cylinder Models) Fixed sheave and post only Made from all billet components. No need to send in components from your stock primary. This is a drop in replacement for the OEM Primary clutch