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Pro Circuit Stainless Steel Header - 4QY01660H

  • Part #: 446806
  • Manufacturer Part #: 4QY01660H
  • MSRP Price: $274.95
  • Our Price: $247.46
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446806
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Overview of Pro Circuit Stainless Steel Header - 4QY01660H

Owned and operated by Mitch Payton, Pro Circuit is a custom precision engine and suspension building facility. Pro Circuit's owner has invested over 25 years in engine building and machine shop techniques
  • Stainless steel head pipes are specially designed to improve performance when compared to stock head pipes
  • Built from 304 stainless steel to ensure maximum durability and corrosion resistance


  • Note:Rejetting is recommended when using this headpipe

    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 3.81 lbs

Specs for Pro Circuit Stainless Steel Header - 4QY01660H

Type Head Pipe
Units Each
Weight 3.81 lbs

Fitment for Pro Circuit Stainless Steel Header - 4QY01660H

Part 446806 fits the following machines

See if this part fits your ride

Yamaha
2005 Yamaha YFM660R Raptor
2004 Yamaha YFM660R Raptor
2003 Yamaha YFM660R Raptor
2002 Yamaha YFM660R Raptor
2001 Yamaha YFM660R Raptor
2005 Yamaha YFM660RLE Raptor Limited Edition
2004 Yamaha YFM660RLE Raptor Limited Edition
2003 Yamaha YFM660RLE Raptor Limited Edition
2002 Yamaha YFM660RLE Raptor Limited Edition

Reviews for Pro Circuit Stainless Steel Header - 4QY01660H

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:
Quality:
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By: from St. Paul, MN

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