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Black Pro Chamber Headpipes - 6255RB

  • Part #:
    4409346
  • Mfg Part #:
    6255RB
  • OEM/Ref#:
1 / 5

Black Pro Chamber Headpipes - 6255RB

  • Part #:
    4409346
  • Mfg Part #:
    6255RB
  • OEM/Ref#:
MSRP: $649.99

Price: $500.49 23% off!
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Cobra Black Pro Chamber Headpipes - 6255RB

Exhaust head pipes must evolve along with the top end of the motorcycle’s engine if they are to be efficient, make power and emit less heat than a stock system.

And that’s what our new for 2017 H-D Baggers head pipes do. For the 2017 H-D Milwaukee Eight, we modified our famous Cobra PowerPort by enlarging it to become a pulse chamber that accelerates exhaust scavenging to produce the kind of power riders expect. Even its cherry bomb shape, bulging from between the heat shields gives a clue to the real power potential it offers.

  • Dual pipe styling with 2-into-1 performance
  • New enlarged pulse chamber improves exhaust scavenging for more horsepower
  • 12mm Oxygen sensor bungs
  • 2.5” heat shields
  • Accepts aftermarket 17-18 specific mufflers
  • Right side accepts 2-1/4” muffler
  • Left side accepts 1-7/8” muffler

Does not work with stock mufflers



Included Items:

(1) Black steel front head pipe W/heat shield

(1) Black steel rear headpipe collector assembly W/heat shield

(1) Black steel left rear crossover pipe W/heat shield

(2) Black steel mounting brackets

(1) Black steel floorboard mount spacer plate

(1) Front headpipe support clamp

(8) #24 Hose clamps

(1) #36 Hose clamp

(1) Thick 3/8" Flat washer

(1) Thin 3/8" Flat washer

(1) 3/8" x 1" Carriage bolt

(1) 3/8" Nylock nut

(2) 1/4" Allen bolts

(2) 1/4" Flat washers

(2) 27-61 MSC band clamps

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.

Specifications
Part #: 4409346
Mfg #: 6255RB
Color Black
Type Head Pipe
Units Pair
Weight 26.95 lbs
Alternate/OEM Part Number(s):
18020361
Resources & Manuals
Fitment for Cobra Black Pro Chamber Headpipes - 6255RB

Part 4409346 fits the following machines

Harley-Davidson
  • Electra Glide Police - FLHTP 2017-2018
  • Electra Glide Standard - FLHT 2019-2020
  • Electra Glide Ultra Classic - FLHTCU 2017-2019
  • Electra Glide Ultra Limited - FLHTK 2017-2020
  • Electra Glide Ultra Limited CVO/SE - FLHTKSE 2017-2020
  • Electra Glide Ultra Limited Low - FLHTKL 2017-2019
  • Road Glide - FLTRX 2017-2020
  • Road Glide CVO/SE - FLTRXSE 2018-2019
  • Road Glide Limited - FLTRK 2020
  • Road Glide Special - FLTRXS 2017-2020
  • Road Glide Ultra - FLTRU 2017-2019
  • Road King - FLHR 2017-2020
  • Road King Special - FLHRXS 2017-2020
  • Street Glide - FLHX 2017-2020
  • Street Glide CVO/SE - FLHXSE 2017-2020
  • Street Glide Special - FLHXS 2017-2020

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Reviews & Questions
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Browse 11 questions Browse 11 questions and 11 answers
Will these work with Harley screaming eagle thunder cannons?
Steve M on Apr 14, 2018
BEST ANSWER: Yes they should
Do these work with screamin eagle 4.5 inch street cannons?
Troy S on May 30, 2019
BEST ANSWER: Yes they should
Do these have a catalytic converter?
A shopper on Mar 28, 2019
BEST ANSWER: No they do not
Are these compatible with CFR slip ons?
A shopper on May 31, 2020
BEST ANSWER: Accepts aftermarket 17-18 specific mufflers
Do you have to get your bike tuned after installing these ?
Bob M on May 26, 2020
BEST ANSWER: Usually not, if running stock air cleaner
Are these better than the true duals?
ALLEN M on May 21, 2020
BEST ANSWER: They are supposed to have the low torque similar to a 2 into 1
I have stock air cleaner and neighbor hater slip one's will I need to get tuned?
A shopper on Jun 16, 2019
BEST ANSWER: Usually not, with stock air cleaner
I am going to assume these work with neighbor hater slip ons?
AP B on Jan 23, 2019
BEST ANSWER: Yes they should
Accepts aftermarket 17-18 specific mufflers
Right side accepts 2-1/4” muffler, left 1-7/8
It says won't work with stock mufflers; what about them won't work?
ANDREW H on Jul 19, 2018
BEST ANSWER: I'm not sure, you would have to contact Cobra
Will these work with 4" Rinehart Racing slip on's?
Dan V on Jul 5, 2018
BEST ANSWER: As long as they are the 17-18 style mufflers
Are these true duals??
A shopper on Jun 22, 2018
BEST ANSWER: There is a cross over.. Not true duals.
5.0 / 5.0
2 Reviews
5 Stars
4 Stars
3 Stars
2 Stars
1 Star
2
0
0
0
0
Finish
5.0 / 5
Fit
5.0 / 5
Performance
5.0 / 5
Styling
5.0 / 5
Value
5.0 / 5
Would you recommend this product?
Yes (2)
Finish
5 / 5
Fit
5 / 5
Performance
5 / 5
Styling
5 / 5
Value
5 / 5
Would you recommend this product?
Yes
2018 Harley-Davodson Street Glide
Very pleased with finish andperformance. Sound awesome during throttle..though little bit of a hollow sound.
June 22, 2018
Purchased
over 2 years ago
Finish
5 / 5
Fit
5 / 5
Performance
5 / 5
Styling
5 / 5
Value
5 / 5
Would you recommend this product?
Yes
Harley Sound Restored!
Lost the heat from the Cat, got the Harley rumble
May 21, 2020
Tulsa, OK
Purchased
3 months ago
Ride:
2018 Street Glide Special