The world's Most Trusted Name in Exhaust Baffles

Home of Thunder Monster Baffles

Producing quality products at a fair price since 1999

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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 QQ 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.