All mufflers are jig built to ensure great fitment and performance

Stock class racing calibrations available

Base Gasket and Head Gasket

This manifold will work with stock

This gauge is available with different lengths of sensor cabling (dependent on vehicle make/model)

Spark Arrestor Kit 2.5" / BIG MO Aluminum Exhaust Category_Default Category/SXS/Exhaust All mufflers are jig builtLooking 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.