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Thunderheader Black 2-into-1 High Performance Exhaust System - 1026B

  • Part #:
    4407262
  • Manufacturer Part #:
    1026B

MSRP Price: $772.00

Our Price: $694.80

You Save:
$77.20 (10%)
2 on Hand

Overview of Thunderheader Black 2-into-1 High Performance Exhaust System - 1026B

  • Designed to give maximum horsepower without sacrificing low-end torque
  • 2-into-1 systems with patented collector design that directs spent exhaust gases in a spiral motion through four acoustical damping chambers
  • Exhaust travels through these chambers at high velocity to scavenge spent exhaust gases from the combustion chamber and bring in a fresh charge of air/fuel mixture
  • Anti-reversion design works to impede reverse flow through the system -- reverse flow can contaminate the incoming fuel/air mixture, which reduces performance and throttle response
  • As reverse flow enters the collector, the diffuser deflects it through vents; the pyramidal trap and apertures impede the reverse flow, allowing time for the exhaust valve to close
  • Flow director has equal area at each end, allowing exhaust gases to travel at a constant velocity over the entire length to improve exhaust scavenging
  • For heat shields, order the following: 25-1725, 14 in. long style top front; 25-1724, 23 in. long style top rear; 25-1723, 13-1/2 in. collector


Included Items:
(1) Black 2-into-1 head pipe muffler assembly with non removable baffle
(1) Black steel mounting bracket
(1) 5/16 in.-18 x 1 1/2 in. hex head bolt
(4) 5/16 in. flat washers
(3) 5/16 in. lock washers
(3) 5/16 in.-18 nuts
(1) Black steel mounting clamp
(2) 5/16 in.-18 x 1 in. hex head bolts
Instructions

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

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

Installation of a new exhaust system may 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 the FUEL/INTAKE section

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 Thunderheader Black 2-into-1 High Performance Exhaust System - 1026B

Color - Primary Black
Style Tapered Tip
Type 2-Into-1 System
Units Each
Weight 18.95 lbs

Specs for Thunderheader Black 2-into-1 High Performance Exhaust System - 1026B

Color - Primary Black
Style Tapered Tip
Type 2-Into-1 System
Units Each
Weight 18.95 lbs

Fitment for Thunderheader Black 2-into-1 High Performance Exhaust System - 1026B

See if this part fits your ride

Part 4407262 fits the following machines

Harley-Davidson
  • 2000 Harley-Davidson Dyna Convertible - FXDS-CONV
  • 1999 Harley-Davidson Dyna Convertible - FXDS-CONV
  • 2005 Harley-Davidson Dyna Low Rider - FXDL
  • 2004 Harley-Davidson Dyna Low Rider - FXDL
  • 2003 Harley-Davidson Dyna Low Rider - FXDL
  • 2002 Harley-Davidson Dyna Low Rider - FXDL
  • 2001 Harley-Davidson Dyna Low Rider - FXDL
  • 2000 Harley-Davidson Dyna Low Rider - FXDL
  • 1999 Harley-Davidson Dyna Low Rider - FXDL
  • 2005 Harley-Davidson Dyna Low Rider Injected - FXDL I
  • 2004 Harley-Davidson Dyna Low Rider Injected - FXDL I
  • 2005 Harley-Davidson Dyna Super Glide - FXD
  • 2004 Harley-Davidson Dyna Super Glide - FXD
  • 2003 Harley-Davidson Dyna Super Glide - FXD
  • 2002 Harley-Davidson Dyna Super Glide - FXD
  • 2001 Harley-Davidson Dyna Super Glide - FXD
  • 2000 Harley-Davidson Dyna Super Glide - FXD
  • 1999 Harley-Davidson Dyna Super Glide - FXD
  • 2005 Harley-Davidson Dyna Super Glide Custom - FXDC
  • 2005 Harley-Davidson Dyna Super Glide Custom Injected - FXDC I
  • 2005 Harley-Davidson Dyna Super Glide Injected - FXD I
  • 2004 Harley-Davidson Dyna Super Glide Injected - FXD I
  • 2005 Harley-Davidson Dyna Super Glide Sport - FXDX
  • 2004 Harley-Davidson Dyna Super Glide Sport - FXDX
  • 2003 Harley-Davidson Dyna Super Glide Sport - FXDX
  • 2002 Harley-Davidson Dyna Super Glide Sport - FXDX
  • 2001 Harley-Davidson Dyna Super Glide Sport - FXDX
  • 2000 Harley-Davidson Dyna Super Glide Sport - FXDX
  • 1999 Harley-Davidson Dyna Super Glide Sport - FXDX
  • 2005 Harley-Davidson Dyna Super Glide Sport Injected - FXDX I
  • 2004 Harley-Davidson Dyna Super Glide Sport Injected - FXDX I
  • 2003 Harley-Davidson Dyna Super Glide T-Sport - FXDXT
  • 2002 Harley-Davidson Dyna Super Glide T-Sport - FXDXT
  • 2001 Harley-Davidson Dyna Super Glide T-Sport - FXDXT
  • 2005 Harley-Davidson Dyna Wide Glide - FXDWG
  • 2004 Harley-Davidson Dyna Wide Glide - FXDWG
  • 2003 Harley-Davidson Dyna Wide Glide - FXDWG
  • 2002 Harley-Davidson Dyna Wide Glide - FXDWG
  • 2001 Harley-Davidson Dyna Wide Glide - FXDWG
  • 2000 Harley-Davidson Dyna Wide Glide - FXDWG
  • 1999 Harley-Davidson Dyna Wide Glide - FXDWG
  • 2005 Harley-Davidson Dyna Wide Glide Injected - FXDWG I
  • 2004 Harley-Davidson Dyna Wide Glide Injected - FXDWG I
4.0 / 5.0
3 Reviews
5 Stars
4 Stars
3 Stars
2 Stars
1 Stars
2
0
0
1
0
Finish
3.0 / 5
Fit
3.5 / 5
Performance
5.0 / 5
Styling
5.0 / 5
Value
3.5 / 5
Loudness
Very Quiet
Average
Very Loud
Would you recommend this product?
Yes (2)
Finish
1 / 5
Fit
2 / 5
Performance
5 / 5
Styling
5 / 5
Value
2 / 5
Would you recommend this product?
Yes
Not what I expected
I bought this system for my FXDX. Got the kit. First thing I noticed is the crappy weld for the pipes that go to the heads. Looks like a rookie welded it. Might porcupines from the wires sticking up and not smoothed out. A Drexel would've gone far. Next, the welds for the 2 into 1 look craptastic like a newbie welded it. The cone section was a little better but not by much. The finish sucked plain ole sucked. It is supposedly a ceramic based paint but oxidation was prevalent. Not good esp for the cost. The sound and performance is where it is at on the Thunderheader. Fit and finish was way off tho. A can of 2000 degree Krylon was used as well as a air grinder to make this road worthy. I got with Thunderheader and no-one even bothered to call me back after 3 attempts.
March 14, 2017
Finish
5 / 5
Fit
5 / 5
Loudness
Very Quiet
Average
Very Loud
Performance
5 / 5
Styling
5 / 5
Value
5 / 5
Would you recommend this product?
Yes
Very happy!!
Shipped in time!! Fit as expected!! Great service!! What more can I ask for?
May 5, 2017
Purchased
7 months ago
Awesome
Great performance, even better sound. Installation was not to difficult. Love the low end torque.
March 5, 2016
Start typing your question and we'll check if it was already asked and answered. Learn More
Browse 4 questions Browse 4 questions and 4 answers
Do I need the heat shields on the exhaust?
A shopper on Apr 19, 2017
BEST ANSWER: I have this pipe and do not have the head shields. No issues at all.
Does this come with all required mounting hardware?
Ben S on Mar 6, 2017
BEST ANSWER: yes
Do you ship to California ?
A shopper on Feb 27, 2017
BEST ANSWER: Yes we do ship to California.
Do you offer a matching Ghost pipe?
A shopper on Sep 6, 2016
BEST ANSWER: I am unaware contact our Tech Support for further information. 800-969-7501

Instructions and Manuals for Thunderheader Black 2-into-1 High Performance Exhaust System - 1026B

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