997.2 3.8L GT3 Dundon Race Header Exhaust with Valved Side Deletes



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Introducing our 321SS long tube correct tuned length stepped headers and light weight muffler combo for 997.1 3.6L, 4.0L all bore, and 4.0L/4.2L stroked engines.

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Race Headers are for Non US or for racing vehicles.


Many of you who have 996 GT3’s and 997 GT3’s know of Dundon Motorsports and our header designs. They make power, sound great, are well made in the USA by Dundon Motorsports, and are guaranteed for life to the original purchaser against cracks, splits, corrosion etc.


26whp 23lbft max gains at 6000rpm


25whp 18lbft peak gain at 7500rpm


30lb weight savings over stock system