This is the ticket for an easy 5-8 MPH on most sleds

Stock class racing calibrations available

The industry's first changeable internal stinger for Ski-Doo allows for adjustments for high/low altitude or race application adjustments

Will not stretch or break

Engine Break-In Protocol

Spark Arrestor Kit 2.5" / BIG MO Aluminum Exhaust Category_Default Category/SXS/Exhaust This is the ticket forLooking to add a spark arrestor to your BMP extruded aluminum Big Mo exhaust? This kit comes with everything you need. Spark arresters play a critical role in the prevention of wildland fire and the ignition of explosive atmospheres. They are enforced by law.