ProFabrication is now home to Big City Thunder

What We Offer

Big City Thunder Motorcycle Baffles: What We Offer

 

LARGE DIAMETER MUFFLERS:

If you have stock or large diameter mufflers or have removed your stock or aftermarket baffles and are not pleased with the results or sound, our head pipe installation is the ticket. Read More >

 

ORIGINAL THUNDER MONSTER BAFFLES:

These baffles are designed to turn all the horsepower and torque loose while delivering that deeper, throatier tone. You can feel the increased performance of the Thunder Monster baffles.

If you want more of a hot rod sound, check out our Original Thunder Monster exhaust baffles that fit most Vance & Hines, Cobra, Samson, Rinehart, Rush, Screamin' Eagle 16 Gauge, fishtails as well as many others. Read More >

 

QQ THUNDER MONSTER BAFFLES:

Looking for the performance that a motorcycle baffle can give you but want to tone it down a bit with an even deeper exhaust note? Our QQ Thunder Monster Baffles will do the job! Available for most Vance & Hines, Cobra, Samson, Rinehart, Rush, Screamin' Eagle 16 gauge, Fishtails, and more. Read More >

 

THUNDER MONSTER BAFFLES FOR SCREAMIN' EAGLE II MUFFLERS?

Thunder Monster Baffles for Screamin' Eagle II mufflers? No problem, we have you covered. Our TMSEII Baffles are specific to the '06 and earlier Screamin' Eagle II Mufflers for Softails, Dynas, and Sportsters.

Screamin' Eagle Street Performance Slip On Mufflers for 2007 and up Baggers, Dynas, and Sportsters. We can make your Eagles soar with our patented Thunder Monster Baffles. The Screamin' Eagle baffles deliver a head turnin' hot rod note to the exhaust . The Screamin' Eagle Baffles are easy to install. Read More >

 

CURVED OR RADIUS PIPES:

We produce baffles for most radius or curved pipes, including Vance & Hines Big Radius 2 into 2, Cobra Swept, Victory Swept, Ness, Hooker Troublemakers, and more. Read More >

 

Testimonials

"I just installed my Thunder Monster baffles on my Fat Boy. What a difference! I can feel the power. I mounted the Thunder Monster baffles into the pipe approximately 12" well over the 3" minimum you suggested. I have been an automotive service tech for over 30 years and have raced almost everything with an engine. I never expected this much of a change from an investment under $100."

Mark Briggs
Rockford, IA
Harley Davidson


"I bought a set of Thunder Monster baffles for my V&H Big Radius, followed the instructions and all I have to say is WOW! I love the sound, throttle response is right there, and I love the mid range boost!! I have a couple of friends now who are ordering them."

Trevor Minor
Waymart, PA
Harley-Davidson