Looking For A New Sound From Your Present Exhast System?
Try Our New QQ Thunder Monster Baffles!

QUIET NEVER SOUNDED THIS HOT!!

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*

 

It's what's inside that counts.

 

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.


THUNDER MONSTER BAFFLES FOR LARGE DIAMETER MUFFLERS, 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 act as a superior anti-reversion device.  This particular application is called a head pipe installation and will provide a deeper, throatier, hot rod/hot bike sound as well as improved performance. 
$79.95 per pair + S&H*

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

ALL Thunder Monster baffles are compatible with fuel injection! 

* 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; WE NEED THAT INFORMATION IN ORDER TO PROVIDE YOU WITH THE CORRECT PRODUCT.

Questions? ask us at questions@bigcitythunder.com!