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Thunderheader True Dual Thunder Exhaust System w/Cross Under - 1071

  • Part #:
    4405542
  • Manufacturer Part #:
    1071

MSRP Price: $1,484.00

Our Price: $1,335.60

You Save:
$148.40 (10%)
1 on Hand

Overview of Thunderheader True Dual Thunder Exhaust System w/Cross Under - 1071

  • Increased horsepower, torque and unmistakable Thunderheader sound
  • Individual pipes for each cylinder, featuring a Cross-Under design
  • Balance tube incorporated in between primary tubes for improved torque
  • Furnished with fittings for Oxygen sensors
  • Thunderheader head pipes have been tuned to the proper length and diameter to produce maximum horsepower and an excellent torque curve
  • A patented collector is used instead of a conventional baffle in the muffler
  • The collector is designed to direct spent gases through four acoustical dampening chambers
  • The flow director serves a multi-task function; directs outgoing flow through four acoustical dampening chambers creating a spiral motion upon exiting to atmosphere and it also forms a pyramidal shaped anti-reversion trap to minimize the amount of air rushing in
  • In conjunction with the flow director, a diffuser shroud is built into the reverse cone, this patented device is designed to diffuse the air rushing in as the pressure inside of the system becomes equal to atmosphere

NOTES:
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 need to be made during, or after, installing their product. If a jet kit or fuel processor is recommended, see our Intake/Fuel section.

Exhaust discoloration (bluing) 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 our Chems/Lubes section for products to help remove or prevent exhaust discoloration

Included Items:
(2) Head pipes
(2) 5/16-18 x 3/4 in. Hex bolts
(6) 5/16 in. Plain washers
(1) 5/16 in. Lock washer
(3) 5/16 in. Nuts
(2) 5/16-18 Lock nuts
(1) Mounting bracket (trans)
(1) 5/16-18 x 1-1/4 in Hex bolt
(1) 1-3/4 in. Clamp
(3) 1-7/8 in. Clamps
(1) 3/8-16 x 1-1/4 in. Carriage bolt
(1) 1-3/4 in. P-Clamp
(1) Cross-Under pipe
(2) 1/4-20 x 1 in. Bolts
(1) 3/8-16 Lock nut
(1) 3/8 in. Plain washer
(1) Rear bracket (trans)
(2) 1/4 in. Lock washers
(2) ThunderCones
(2) ThunderCone heat shields
(1) Left under head shield
(1) Front heat shield
(1) Rear heat shield
(13) Heat shield clamps
(2) 5/16-18 x 1/2 in. Hex bolts
(2) 1/4 in. Plain washers

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 True Dual Thunder Exhaust System w/Cross Under - 1071

Color - Primary Chrome
Finish Chrome
Style Straight-Cut Tip
Type 2-Into-2 System
Units Each
Weight 38.60 lbs

Specs for Thunderheader True Dual Thunder Exhaust System w/Cross Under - 1071

Color - Primary Chrome
Finish Chrome
Style Straight-Cut Tip
Type 2-Into-2 System
Units Each
Weight 38.60 lbs

Fitment for Thunderheader True Dual Thunder Exhaust System w/Cross Under - 1071

See if this part fits your ride

Part 4405542 fits the following machines

Harley-Davidson
  • 2013 Harley-Davidson Electra Glide Classic - FLHTC
  • 2012 Harley-Davidson Electra Glide Classic - FLHTC
  • 2011 Harley-Davidson Electra Glide Classic - FLHTC
  • 2010 Harley-Davidson Electra Glide Classic - FLHTC
  • 2016 Harley-Davidson Electra Glide Ultra Classic - FLHTCU
  • 2015 Harley-Davidson Electra Glide Ultra Classic - FLHTCU
  • 2014 Harley-Davidson Electra Glide Ultra Classic - FLHTCU
  • 2013 Harley-Davidson Electra Glide Ultra Classic - FLHTCU
  • 2012 Harley-Davidson Electra Glide Ultra Classic - FLHTCU
  • 2011 Harley-Davidson Electra Glide Ultra Classic - FLHTCU
  • 2010 Harley-Davidson Electra Glide Ultra Classic - FLHTCU
  • 2016 Harley-Davidson Electra Glide Ultra Classic Low - FLHTCUL
  • 2015 Harley-Davidson Electra Glide Ultra Classic Low - FLHTCUL
  • 2016 Harley-Davidson Electra Glide Ultra Limited - FLHTK
  • 2015 Harley-Davidson Electra Glide Ultra Limited - FLHTK
  • 2014 Harley-Davidson Electra Glide Ultra Limited - FLHTK
  • 2013 Harley-Davidson Electra Glide Ultra Limited - FLHTK
  • 2012 Harley-Davidson Electra Glide Ultra Limited - FLHTK
  • 2011 Harley-Davidson Electra Glide Ultra Limited - FLHTK
  • 2010 Harley-Davidson Electra Glide Ultra Limited - FLHTK
  • 2016 Harley-Davidson Electra Glide Ultra Limited Low - FLHTKL
  • 2015 Harley-Davidson Electra Glide Ultra Limited Low - FLHTKL
  • 2016 Harley-Davidson Road Glide - FLTRX
  • 2015 Harley-Davidson Road Glide - FLTRX
  • 2013 Harley-Davidson Road Glide Custom - FLTRX
  • 2012 Harley-Davidson Road Glide Custom - FLTRX
  • 2011 Harley-Davidson Road Glide Custom - FLTRX
  • 2010 Harley-Davidson Road Glide Custom - FLTRX
  • 2016 Harley-Davidson Road Glide Special - FLTRXS
  • 2015 Harley-Davidson Road Glide Special - FLTRXS
  • 2016 Harley-Davidson Road Glide Ultra - FLTRU
  • 2013 Harley-Davidson Road Glide Ultra - FLTRU
  • 2012 Harley-Davidson Road Glide Ultra - FLTRU
  • 2011 Harley-Davidson Road Glide Ultra - FLTRU
  • 2016 Harley-Davidson Road King - FLHR
  • 2015 Harley-Davidson Road King - FLHR
  • 2014 Harley-Davidson Road King - FLHR
  • 2013 Harley-Davidson Road King - FLHR
  • 2012 Harley-Davidson Road King - FLHR
  • 2011 Harley-Davidson Road King - FLHR
  • 2010 Harley-Davidson Road King - FLHR
  • 2013 Harley-Davidson Road King Classic - FLHRC
  • 2012 Harley-Davidson Road King Classic - FLHRC
  • 2011 Harley-Davidson Road King Classic - FLHRC
  • 2010 Harley-Davidson Road King Classic - FLHRC
  • 2010 Harley-Davidson Screamin' Eagle Electra Glide Ultra Classic - FLHTCUSE 5
  • 2010 Harley-Davidson Screamin' Eagle Street Glide - FLHXSE
  • 2016 Harley-Davidson Street Glide - FLHX
  • 2015 Harley-Davidson Street Glide - FLHX
  • 2014 Harley-Davidson Street Glide - FLHX
  • 2013 Harley-Davidson Street Glide - FLHX
  • 2012 Harley-Davidson Street Glide - FLHX
  • 2011 Harley-Davidson Street Glide - FLHX
  • 2010 Harley-Davidson Street Glide - FLHX
  • 2016 Harley-Davidson Street Glide Special - FLHXS
  • 2015 Harley-Davidson Street Glide Special - FLHXS
  • 2014 Harley-Davidson Street Glide Special - FLHXS
3.3 / 5.0
3 Reviews
5 Stars
4 Stars
3 Stars
2 Stars
1 Stars
1
1
0
0
1
Finish
4.3 / 5
Fit
4.5 / 5
Performance
3.3 / 5
Styling
4.5 / 5
Value
4.5 / 5
Loudness
Very Quiet
Average
Very Loud
Would you recommend this product?
Yes (2)
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
Awesome exhaust!
Once tuned properly, bikes runs and sounds amazing. To the guy that gave a bad review your stealership has no clue!
August 12, 2016
Finish
4 / 5
Fit
4 / 5
Loudness
Very Quiet
Average
Very Loud
Performance
4 / 5
Styling
4 / 5
Value
4 / 5
Would you recommend this product?
Yes
Like overall looks and sound
Exhaust system was fairly to install and sounds great
October 11, 2017
Purchased
2 months ago
Finish
4 / 5
Performance
1 / 5
Thick twice before using product
After putting on the True dual exhaust the bike now back fires when taking off and is sluggish. I would not recommend. 4 times to dealership and I was told nothing they could do might be wrong pipes.
June 4, 2015
Start typing your question and we'll check if it was already asked and answered. Learn More
Browse 2 questions Browse 2 questions and 3 answers
I have a 2014 flhtkse ultra L and I am wondering if this exhaust will fit this bike? Thanks.
Billy on Aug 8, 2016
BEST ANSWER: Yes, these should fit.
do you have it in black? 1071B
Valentin t on Aug 30, 2016
BEST ANSWER: It unfortunately does not appear as though we carry the Black model 1071B. I'm sorry Valentin.

Instructions and Manuals for Thunderheader True Dual Thunder Exhaust System w/Cross Under - 1071

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