PRODUCTS & FIT

Original Thunder Monster Baffles
- deliver a deeper tone to the note of your exhaust. Additionally, Thunder Monster baffles will turn all the horsepower loose. Up to 12 midrange HP over a straight pipe with no baffle, enough torque to pull tree stumps, and a killer sound. These fit: 1 5/8" INSIDE DIAMETER PIPES, 1 3/4" INSIDE DIAMETER PIPES, 1 7/8" INSIDE DIAMETER PIPES, 2" INSIDE DIAMETER PIPES, & 2 1/8" INSIDE DIAMETER PIPES.


$79.95 per pair + S&H* baffle (click photo for larger view)


It's what's inside Thunder Monster Baffles that counts!



Thunder
Monster Baffles for Screamin' Eagle II Slip Fit Mufflers - WITH A REMOVABLE BAFFLE THAT THE SCREAMIN' EAGLE BAFFLE MEASUREMENT IS: 2 7/8" DIA. x 11 1/4" LONG. (Note: one of the mufflers must have “Screamin’ Eagle II” stamped on it for these baffles to be compatible.
They will not fit the ’07 and later Screamin’ Eagle mufflers.) Turn your Screamin’ Eagle II mufflers into a completely new exhaust system in minutes and have a deeper, throatier tone to the exhaust note with our easy to install Thunder Monster replacement baffles. Slide out the old, slide in the new, no cutting, welding drilling or hassles. It’s that easy.


$129.95 per pair + S&H* screamin
(click photo for larger view)




Thunder
Monster Baffles for large diameter mufflers, ie. - ie. If you have installed aftermarket mufflers or you have “gutted” your stock mufflers, drilled them out, removed or modified the baffles, have a free flowing type baffle, or have an application in which you are not able to install the Thunder Monster baffles in the rear portion of the pipe, Big City Thunder has a Thunder Monster baffle that installs in the exit end of the head pipe where it joins the muffler. As with all our other products the Thunder Monster baffles will provide the proper amount of back pressure, flow the exhaust gases properly and deal with reversion. The Thunder Monster baffles will also provide a deeper, throatier, hot rod/hot bike sound.

. $79.95 per pair + S&H*

Click on image for larger view
install 01 install 02 install 03 install 04 install 05



ALL Thunder Monsters are compatible with fuel injection!


Looking for a new sound from your present exhast system?
It's what's inside Thunder Monster Baffles that counts.

In today’s world motorcycle sound requirements are not to be ignored! Big City Thunder has addressed these sound issues with our new patented Quality Quiet Thunder Monster baffles. Our new 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 rideability and mid range performance.

We call them Quality Quiet Thunder Monster baffles. You’ll call them the best decision you ever made for your bike

Our 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


$129.95 per pair + S&H

QUIET NEVER SOUNDED THIS HOT!!

 

For New Screamin' Eagle®
Street Performance Slip on Mufflers

Supercharge your Sound and Performance with our New Dyno Proven QQ Thunder Monster baffles for Screamin’ Eagle Street Performance mufflers. You can turn your Screamin’ Eagle Street Performance mufflers into a completely new exhaust system. $169.95 per pair + S&H

For Softail models – Provided your Screamin’ Eagle baffle measures 3 1/8” diameter by approximately 17 ¾” in length our new Thunder Monster baffles are designed to replace the original Screamin’ Eagle® baffles and deliver a deeper, throatier, hot rod sound as well as improved performance. Please measure per the illustration shown prior to calling, e-mailing or ordering.

Your Screamin’ Eagle baffle must match the illustration shown below, dimensionally and look the same.

For Bagger models – Provided your Screamin’ Eagle baffle measures 3 3/8” diameter by approximately 26 ¼” in length our New Thunder Monster baffles are designed to replace the original Screamin’ Eagle baffles and deliver a deeper, throatier, hot rod sound as well as improved performance. Please measure per the illustration shown below prior to calling, e-mailing or ordering. (These baffles are not compatible with the 4” Touring Mufflers.For the 4" touring mufflers you would modify your mufflers and install Thunder Monster Baffles part #2003 in the exit end of your head pipe.)


Your Screamin’ Eagle baffle must match the illustration shown below, dimensionally and look the same.

Cutaway picture of our new Thunder Monster baffle for Screamin’ Eagle Street Performance Mufflers shown to the right.


QUIET NEVER SOUNDED THIS HOT!!

 

How Do I Know If Thunder Monster Baffles Will Fit My Pipes?
Big City Thunder products work in any 4 cycle engine with a straight pipe type exhaust
from a single cylinder up to 6 cylinder motorcycles with any cubic inch displacement. Installation instructions are included with all our products.

If you have Vance & Hines, Screamin' Eagle, Bub, Cobra, Samson, Rinehart, Jardine, Bassini, Custom Built, or other aftermarket pipe that at the exit end does not turn out (does not include tips that can be removed), and is of a straight type pipe design that measures
1 5/8", 1 3/4", 1 7/8", 2" or 2 1/8" inside diameter, Thunder Monster baffles will fit your pipe. All Thunder Monster baffles are compatible with a slash cut pipes.

For curved pipes such as Vance & Hines Big Radius and Ness Slashers we recommend our Thunder Monster baffles part number 2002 or our new QQ baffles part number QBL 1845. For the Hooker Troublemakers we recommend our Thunder Monster baffles part number 2001 or our new QQ baffles part number QBL 1994. For other curved pipe applications please call and have the pipe dimensions available.

* All prices subject to change with out prior written notice.

DUE TO THE FACT THAT PIPES AND STYLES WILL VARY EVEN WITH THE SAME MANUFACTURER PLEASE BE SURE TO MEASURE THE INSIDE AND OUTSIDE DIAMETER OF YOUR PIPES AS WELL AS THE OUTSIDE DIAMETER OF YOUR BAFFLE, PROVIDED YOU HAVE ONE, BEFORE CALLING OR E-MAILING; THAT INFORMATION IS NECESSARY IN ORDER TO HELP YOU DETERMINE THE CORRECT PRODUCT FOR YOUR APPLICATION.

 

Questions? ask us at questions@bigcitythunder.com!