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Cobra True-Duals Header System - 6251

  • Part #:
    4402397
  • Manufacturer Part #:
    6251

MSRP Price: $441.95

Our Price: $340.30

You Save $101.65 (23%)
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1 0 HR : 1 0 MIN : 3 2 SEC
Overview of Cobra True-Duals Header System - 6251
  • Feature individual 1-3/4 in. headpipes for increased exhaust flow
  • 2.5 in. one-piece heat shields provide proportionality and seamless, unbroken flow to traditionally styled V-Twins
  • Accept Cobra slip-on mufflers or any 95-up OEM-style mufflers: 44-8282, 44-8283, 44-00248


NOTES:

Includes O2 sensor ports

Mufflers not included; must be purchased separately.

For optional replacement exhaust bracket tab, offer Part No. 4407844

Not all products are legal for sale or use on pollution controlled vehicles. Check your local laws and the manufacturers information

Installation of a new exhaust system my change your motorcycles fuel-air mixture requirements. Please consult the exhaust manufacturer directly with questions regarding any modifications that may need to be made during, or after, installing their product. If a jet kit or fuel processor is recommended, see FUEL/INTAKE

There is no warranty on exhaust pipes and mufflers with regard to any discoloration. Discoloration (blueing) is the result of tuning characteristics, cam timing, carb jetting, overheating, etc., and is not caused by defective manufacturing. See CHEMS/LUBES section for products that will help prevent or remove blueing.

 



Included Items:

(2) Front and rear head pipe w/heat shields

(1) Rear head pipe support bracket

(6) Hose clamps #24

(1) Clamp 27-48 w/M6 x 45mm bolt

(2) Spacers 

Instructions



The Air Resources Board (ARB) does not permit the use of aftermarket emission-related parts that alter the air/fuel ratio of an emission-controlled vehicle. Due to these legal restrictions this part cannot be shipped to California.

Specs for Cobra True-Duals Header System - 6251

Color - Primary Silver
Finish Chrome
Type Head Pipe
Units Set
Weight 15.75 lbs

Alternate/OEM Part Number(s):

18000635
Specs for Cobra True-Duals Header System - 6251
Color - Primary Silver
Finish Chrome
Type Head Pipe
Units Set
Weight 15.75 lbs
Fitment for Cobra True-Duals Header System - 6251

Part 4402397 fits the following machines

Make Sure This Fits Your Ride
Harley-Davidson
  • 2008 Harley-Davidson Electra Glide Classic (EFI) - FLHTC
  • 2007 Harley-Davidson Electra Glide Classic (EFI) - FLHTC
  • 2008 Harley-Davidson Electra Glide Standard (EFI) - FLHT
  • 2007 Harley-Davidson Electra Glide Standard (EFI) - FLHT
  • 2008 Harley-Davidson Electra Glide Ultra Classic (EFI) - FLHTCU
  • 2007 Harley-Davidson Electra Glide Ultra Classic (EFI) - FLHTCU
  • 2007 Harley-Davidson Electra Glide Ultra Classic CVO/SE (EFI) - FLHTCUSE 2
  • 2008 Harley-Davidson Electra Glide Ultra Classic CVO/SE (EFI) - FLHTCUSE 3
  • 2008 Harley-Davidson Road Glide (EFI) - FLTR
  • 2007 Harley-Davidson Road Glide (EFI) - FLTR
  • 2008 Harley-Davidson Road King (EFI) - FLHR
  • 2007 Harley-Davidson Road King (EFI) - FLHR
  • 2008 Harley-Davidson Road King Classic (EFI) - FLHRC
  • 2007 Harley-Davidson Road King Classic (EFI) - FLHRC
  • 2007 Harley-Davidson Road King Custom (EFI) - FLHRS
  • 2007 Harley-Davidson Road King CVO/SE (EFI) - FLHRSE 3
  • 2008 Harley-Davidson Road King CVO/SE (EFI) - FLHRSE 4
  • 2008 Harley-Davidson Street Glide (EFI) - FLHX
  • 2007 Harley-Davidson Street Glide (EFI) - FLHX
4.9 / 5.0
40 Reviews
5 Stars
4 Stars
3 Stars
2 Stars
1 Star
35
5
0
0
0
Finish
4.9 / 5
Fit
4.7 / 5
Performance
4.9 / 5
Quality
4.9 / 5
Style
4.9 / 5
Styling
4.9 / 5
Value
4.9 / 5
Loudness
Very Quiet
Average
Very Loud
Would you recommend this product?
Yes (11)
Fit
5 / 5
Quality
5 / 5
Style
5 / 5
Value
5 / 5
Excellent Product
Installation was easy with the detailed instruction sheet and
everything fit perfectly. I can't say enough about appearance
and style, the system looks so natural on the bike you'll
swear its factory and the chrome is just as flawless. The true
duals really enhanced the sound of my customized mufflers while adding perfomance. Another great feature of this system is the elimination of the right side heat problem
inherent to the crossover system of some models. My wife
no longer complains of discomfort due to exhaust heat.
I highly recommend this quality product.
July 22, 2011
Racine, WI
Fit
4 / 5
Quality
5 / 5
Style
5 / 5
Value
4 / 5
Best Purchase
Installation is very easy. Fit is excellent. Added slip-ons
Sound is Awsome
September 30, 2009
Chandler, AZ
Best Purchase
Great price for the Tru Duals Header System. Product was shipped fast and the free shipping is a plus.
April 4, 2010
Brook Park, OH
Fit
5 / 5
Quality
5 / 5
Style
5 / 5
Value
5 / 5
Cobra True-Duals Header System
Exact fit. Everything lined up perfectly. Looks great. Sounds even better.
August 9, 2010
Fit
5 / 5
Quality
5 / 5
Style
5 / 5
Value
5 / 5
true duels= true deal
pipes whent on great no problems sound good and look good, had a cancer cemo infusion in the a.m and still got pipes and mufflers on in two and a half houers, would recommend to any body
April 22, 2011
Fit
5 / 5
Quality
5 / 5
Style
5 / 5
Value
5 / 5
GOOD SOUNDING PIPES
GOOD SOUNDING PIPES WHEN THEY WERE COMBINED WITH THE RUSH MUFFLERS I ALREADY HAD.
TOOK ABOUT 2.5 HRS TO INSTALL BY THE TIME I REMOVED THE FACTORY PIPES. ALREADY GOT COMPLEMENTS ON THE GOOD SOUND THEY PRODUCE.
March 21, 2010
Fit
5 / 5
Quality
5 / 5
Style
5 / 5
Value
5 / 5
great price
was well pleased with the cobra head pipes great fit & finish . also good customer service & on time delevery
July 16, 2010
Fit
4 / 5
Quality
5 / 5
Style
5 / 5
Value
5 / 5
Love COBRA products
Awesome product. Took a minute to get them on but well worth the time spent with my son.
January 8, 2012
Finish
5 / 5
Performance
5 / 5
No Review Title Entered By User
Good, high quality item at a great price. Added some cheaper mufflers with baffles I could adjust the packing on and I have a full system for about $200 less then the name brands. Thanks Cobra!
June 2, 2015
Fit
4 / 5
Quality
5 / 5
Style
5 / 5
Value
5 / 5
Great Value
I rated this product overall as a 5 star. The only actual finish problem was the rear pipe as it was not polished before chroming, that said the shields cover both pipes very well. Be sure to order; Graphite Wire Exhaust Port Gaskets and Heavy-Duty Hex Nuts as none are supplied.

My ride is stage 1 plus cams. The mufflers are modified SC. The Corbra's woke my bike up and stopped the de-accel exhaust pop. The instructions are clear and installation is easily completed in 3 hrs. I searched the web for a better deal but these were the best going and Denis Kirk was the least expensive.
November 8, 2011
Central Valley, CA
Start typing your question and we'll check if it was already asked and answered. Learn More
Browse 5 questions Browse 5 questions and 16 answers
Does 2006 FLHTCUI HAVE O2 SENSOR?
A shopper on Apr 2, 2017
BEST ANSWER: No, you would see them on the back side of pipes
If I buy these do I have to get a Power Commander?
Steve G on Jul 22, 2018
BEST ANSWER: I have a 2007 Ultra Classic with the 96 cid engine. These true duals bolted right up with no problems at all. Direction are very easy to follow. I did nothing else to the motorcycle, except get on it and go. There was a noticeable increase in performance.
Will my passenger foot rest still fit my 07 ultra classic?
A shopper on Oct 8, 2018
BEST ANSWER: Yes, I have the passenger footboards and they fit great. The left side needs to be removed to install pipes correctly. But after the pipes are installed, reinstall the footboard. Good to go.
Which exhaust gaskets does this system need? I've looked at other systems and some recommend a style other than what the factory exhaust would use.
Jaegar H on Feb 17, 2019
BEST ANSWER: I just used factory and I haven’t had a problem I forgot to order when I ordered pipes so had to go to dealership wanted to get bike on street
What size bung in the cobra 6251?
David B on Jan 31, 2017
BEST ANSWER: I bought these for a buddy and I assume you mean the 02 sensor bung. On the touring model they are 18mm up to 2009, after 2009 they are 12mm. Hope thus helps
Instructions and Manuals for Cobra True-Duals Header System - 6251