997.2 GT3/RS



So here is my final review about these Dundon headers: - First of all, these headers are beautiful.... they look so good that I just want to hang them on my wall. A quality product! Comes packaged nicely with a set of K&N filters. - Install by the shop was smooth like a breeze, no fitment issues at all. Took around 2... read more

Kareem, Bahrain
GT4 Race Headers

997.1 3.6L GT3/RS and 997.2 GT3 321SS Dundon Race Headers w/ flapped side deletes

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.


Click on a photo to enlarge.

Race Headers are for Non US or for racing vehicles.

Dundon Race Headers, 321SS tuned length stepped headers and flapped side delete combo for 997.1 3.6L. 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

scroll up