Legalities aside, it scrubs the exhaust and reduces pollution so we can all breathe better. The MagnaPack after-cat is a new design from MagnaFlow. The pipe diameter is 3 inches throughout ...

We plan to put miles on this Chevelle, and 3-inch systems are notorious for their bellicose exhaust notes. Normally, the Flowmaster American Thunder kit is shipped with a pair of 40-series ...

Rarely does an automotive part offer the best of both worlds, but we think exhaust cutouts can often deliver ... Patriot offers this kit in 2-inch and 3-inch diameter pipe sizes, and pricing ...