Blackworks Racing Test Pipes are designed to be a slip fit, which is awesome for those who have modified custom exhaust systems that are not necessarily the same length. No longer do you need to worry about the angle of your header or catback exhaust flanges. With the Blackworks BWR Test Pipe, the flanges turn since the middle of the test pipe is slip fit, and you can adjust the length according to what you need. This makes the Blackworks Test Pipe fit virtually any combination of header length and collector flanges.
