Thunder Monster Baffles for pipes with an inside diameter of 2" and outside diameter of 2 1/8".
Some of the pipes these fit: Vance & Hines Big Shot Staggered, Big Shot Long, Side Shots, Vance and Hines HS pipes, Screaming Eagle 16 Gauge for Softail/Dyna, Python Staggered Duals. These are only examples of pipes and you will need to measure your pipes for proper sizing.
If you have any question please call! 704-847-1222