Big City Thunder will be closed for in observance of Christmas Dec 23-27. All orders placed during those dates will ship on Monday Dec. 30th.

Big City Thunder, part of ProFabrication

How to Measure your Pipes

1. Measure the inside diameter (ID) of the pipe at the exit end that you are installing the baffles in. (If installing into the head pipe, please measure the inside diameter (ID) of it as well.)

2. If removing existing baffles, measure the outside diameter (OD) of your existing baffles.

3. DO NOT MEASURE YOUR HEAT SHIELDS.

4. If you have gutted your mufflers or removed your stock baffles call and ask for a tech person, 704.847.1222.

(Diameter: The distance across a circle.)

Inside Diameter Measurement (ID)

Outside Diameter Measurement (OD)