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Thunderheader True Dual Thunder Exhaust System w/Heat Shields - 1051

  • Part #: 4404799
  • Manufacturer Part #: 1051
This item is no longer available

Overview of Thunderheader True Dual Thunder Exhaust System w/Heat Shields - 1051

  • Individual pipes for each cylinder
  • Furnished with fittings for Oxygen sensors
  • ThunderHeader head pipes have been tuned to the proper length and diameter to produce maximum horsepower and a excellent torque curve
  • A patented collector is used
  • 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-revision trap to minimize the amount of air rushing in
  • In conjunction with the flow director, a diffuser shroud is attached to the reverse cone, this patented device is designed to defuse the air rushing in as the pressure inside of the system becomes equal to atmosphere

Included Items:
(1) Head Pipes
(2) 5/16 in.-18 x 3/4 in. Hex Bolt
(6) 5/16 in. Plain Washers
(1) 5/16 in. Lock Washer
(3) 5/16 in.-18 Nuts
(2) 5/16 in.-18 Lock Nuts
(1) Mounting Bracket
(1) 5/16 in.-18 x 1-1/4 in. Hex Bolt
(1) Clamp 1-3/4 in.
(3) Clamps 1-7/8 in.
(1) 3/8 in.-16 x 1-1/4 in. Carrage Bolt
(1) P Clamp 1-3/4 in.
(1) Cross-Under Pipe
(2) 1/4-20 x 1 in. Bolt
(1) 3/8 in.-16 Lock Nut
(1) 3/8 in. Plain Washer
(1) Bracket
(2) 1/4 in. Lock Washer
(2) Thundercone
(2) Heat Shields (thundercone)
(1) Heat Shield, left
(1) Heat Shield, Front
(1) Heat Shield, Rear
(13) Heat Shield Clamps
(2) 5/16 in.-18 x 1/2 in. Hex Bolts
(2) 1/4 in. Plain Washers

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 in the back of this catalog 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

Specs for Thunderheader True Dual Thunder Exhaust System w/Heat Shields - 1051

Finish Chrome
Style Tapered Tip
Type 2-Into-2 System
Units Each
Weight 38.65 lbs

Specs for Thunderheader True Dual Thunder Exhaust System w/Heat Shields - 1051

Finish Chrome
Style Tapered Tip
Type 2-Into-2 System
Units Each
Weight 38.65 lbs

Fitment for Thunderheader True Dual Thunder Exhaust System w/Heat Shields - 1051

See if this part fits your ride

Part 4404799 fits the following machines

Harley-Davidson
  • 2009 Harley-Davidson Electra Glide Classic - FLHTC
  • 2009 Harley-Davidson Electra Glide Standard - FLHT
  • 2009 Harley-Davidson Electra Glide Ultra Classic - FLHTCU
  • 2009 Harley-Davidson Road Glide - FLTR
  • 2009 Harley-Davidson Road King - FLHR
  • 2009 Harley-Davidson Road King Classic - FLHRC
  • 2009 Harley-Davidson Street Glide - FLHX
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February 26, 2011
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Instructions and Manuals for Thunderheader True Dual Thunder Exhaust System w/Heat Shields - 1051

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