Pro Circuit Stainless Steel Header - 4T03450H

  • Part #: 431841
  • Manufacturer Part #: 4T03450H
  • MSRP Price: $324.95
  • Our Price: $292.46
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431841
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Overview of Pro Circuit Stainless Steel Header - 4T03450H

  • Pro Circuit is a custom precision engine and suspension building facility
  • Stainless steel headers are specially designed to improve performance when compared to stock headers; built from 304 stainless steel to ensure maximum durability and corrosion resistance


  • Note: Exhaust discoloration (blueing) is caused by engine conditions such as cam timing, fuel-air mixture, operating temperature, etc. It is not the result of defective manufacturing, therefore it is not covered by any warranty. See the Chems/Lubes section for products to help remove or prevent exhaust discoloration.


Specs

Type Head Pipe
Units Each
Weight 2.87 lbs

Specs for Pro Circuit Stainless Steel Header - 4T03450H

Type Head Pipe
Units Each
Weight 2.87 lbs

Fitment for Pro Circuit Stainless Steel Header - 4T03450H

Part 431841 fits the following machines

See if this part fits your ride

KTM
2003 KTM 450 SX Racing 4-Stroke
2004 KTM 525 SX Racing 4-Stroke

Reviews for Pro Circuit Stainless Steel Header - 4T03450H

out of 4 reviews.

4 out of 4 (100%) customers would recommend this to a friend.

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Sound: Loud
soft loud
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Good Header

May 8, 2012

The original header flange was way too thick to use the drz400 header bolts so I had to take the flange off of the stock pipe and slightly modify it to be used with the new header. Was a little hard to get it to bolt up to a Yoshi slip-on too but I was expecting that. Overall it's a great mod for the price, I could feel the bike gained some mid range and top end power.

I would recommend this item to a friend.
Fitment:
Sound: Loud
soft loud
Finish:
Performance:
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Worked for me.

March 27, 2012

had to replace stock header on my 06 crf250x, I was a little concerned about it fitting as my local dealer told me it probably wouldn't. I phoned Dennis Kirk and they confirmed with their tech that it would fit and when it came I had no problems installing. I also saved a reasonable amount of money buying thru Dennis Kirk , which was key in making the purchase in the first place.

I would recommend this item to a friend.
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September 9, 2010

I would recommend this item to a friend.
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By:

Better performance than stock and much cheaper.

January 21, 2010

I had to replace the header on my 450 due to damage to the stocker. This one was much cheaper than replacing with OEM and I saw increased performance over the stocer (in it's pre-damaged condition).

I would recommend this item to a friend.
Fit/Finish:
Value:
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By: from St. Paul, MN

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