997.2 GT3/RS/Cup

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Video doesn't do it justice you need to hear it in person holy crap does it sound good! I thought my center bypass sounded good but these race headers blows it out of the water in every way. In my opinion these headers are 30% louder than previous setup and the best part zero drone. Listen to the high pitch... read more

Derek, Taiwan
991 GT3RS Race Headers

997.2 3.8L GT3/RS/Cup 321SS Dundon Race Header and Flapped Side Delete

Introducing our 321SS long tube correct tuned length stepped headers with valved side deletes for 997.2 3.8L, 4.0L all bore, and 4.0L/4.2L stroked engines.

$7,195.00

Click on a photo to enlarge.

Race Headers are for Non US or for racing vehicles.

 

Introducing our 321SS long tube correct tuned length stepped headers and light weight muffler combo for 997.2 3.8L, 4.0L all bore, and 4.0L/4.2L stroked engines.  They make power, sound great, do not drone and are made in the USA by Dundon Motorsports, and are guaranteed for life to the original purchaser against cracks, splits, corrosion etc.

 

30whp 20lbft max gains at 7300rpm

28whp 16lbft peak gains at 8000rpm

Brings the car to 500bhp, same as a 4.0RS!

 

 

 

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