New Thunder Monster Baffles from Big City Thunder

Now You Don't Have to Choose Between Sound and Performance

With Thunder Monster® baffles from Big City Thunder® you can have it all - a deep, throaty tone to the note of the exhaust and improved performance. Our products fit most straight type pipes from Vance & Hines, Samson, Cobra, etc. We also have applications for large diameter mufflers and curved pipes. If you've gutted or modified your stock baffles and are not pleased with your results we have an application that installs at the exit end of your head pipe, to improve both your sound and performance.

If you have Screamin' Eagle® II mufflers, we have baffles that will make you believe that you changed your exhaust system, not just your baffles.

And if you're worried about motorcycle sound requirements, Big City Thunder has addressed those issues as well, with our new patented Quality Quiet Thunder Monster baffles. Our QQ Thunder Monster baffles are quieter than our original Thunder Monster baffles, with a rich, deep tone to the exhaust note. Our latest breakthrough design dissipates sound energy to reduce the db levels. The new QQ series also increases ridability and mid range performance.

The new QQ series is available for the following size pipes:

2 1/8" inside diameter with a 2 1/4" outside diameter
2" inside diameter with a 2 1/8" outside diameter
1 7/8" inside diameter with a 2" outside diameter

Thunder Monster baffles for most applications are a quick and easy bolt-in installation.

We have Thunder Monster® baffles for metric bikes as well.

Call 704-847-1222 or visit us on the web at

New Thunder Monster Baffles from Big City Thunder