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Here is a set of our muffler bypass pipes with 100 cpi catalytic converters that we fabricated and shipped today. The bypass pipes feature full 3" brushed T304 stainless steel construction, back purged welding for smooth exhaust flow and V-band flanged outlets, so they can be used with any SpeedTech 996TT muffler or X-Pipe. If anyone is looking for a set of muffler bypass pipes (catted or catless), please contact us.