• Made in the U.S.A.
• Measure the distance around the outside of the muffler's shell to determine its circumference
• For unmodified aftermarket exhausts
• If the muffler has been modified from the original length and falls between lengths available, order the next longest cartridge available for your muffler
• Designed to pack all mufflers with core diameters between 1-3/4" - 2-1/4" and shell circumferences between 12" and 13-1/2"