Examples of loud aftermarket mufflers designed and marketed to be installed on federally regulated motorcycles that are missing the label as required by 40CFR205.169(a)2.
A D&D brand aftermarket muffler designed for a 2003 Kawasaki ZRX1100 hollow core with no EPA label:
A Kerker brand aftermarket muffler designed for a 2001 Harley Davidson FLT, hollow core with no EPA label: