Iv read through a couple threads and I was wondering if anyone can confirm? If I buy a racingbeat 2.5" downpipe and make my own custom silencer It will have to be 20.75" to bolt to the cat-back, thats what some one said the racingbeat presilencer is 20.75", can anyone confirm this???
thanks

 

I can't confirm it, since I am using the 3 inch DP; but if the 2.5 inch is like the 3 inch dp, is not really a flat lenght. Is more like 20 inches on one side of the flange, and 19 inches on the other side of the flange. In short, the catback flange is crooked.

BTW - The numbers I used aren't real, I used them as a sample.

 

Taken directly from racingbeat.com

"The Power Pulse Presilencer improves the character of the exhaust noise, dramatically reducing the inherent, obnoxious metallic high frequency noise with virtually no power loss. Constructed with perforated core of 304 Stainless Steel wrapped with high-temperature stainless steel wool, the Power Pulse Presilencer measures 20 inches in length with a 4-inch outside diameter."

Hope this helps.