COVID-19 UPDATE: Starting March 30th we will begin shipping orders once a week for IN STOCK items only. We have set up an automated phone service that will allow you to speak with a sales representative during this time, if needed. We thank all of our customers for working with us during this time and look forward to returning to full production in the coming weeks.

The World's Most Trusted Name in Exhaust Baffles

Home of Thunder Monster Baffles

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Welcome to Big City Thunder!

- Don't be baffled about sound and power, Big City Thunder delivers both!!

- If you are looking for a more aggressive, throaty sound we can help, with our Original Thunder Monster baffles.

- If you are trying to tone things down, but not kill the sound we have you covered with our Quiet Thunder Monster baffles.

- If you have a flat spot or hesitation with your carbureted bike we have an answer.

- If you have decel popping on your fuel injected bike we can help.

"We not only produce baffles that perform but also deliver a true Hot Rod rumble."

Big City Thunder – real world performance. Real people with real answers. Try Us Today.