Dennis Kirk Inc.
Search Within
Ride Search
Top 3 Product Matches

Thunderheader Black Long Style High-Performance 2-Into-1 Exhaust System with Heat Shields - 1054SB

  • Part #:
    4408741
  • Manufacturer Part #:
    1054SB

MSRP Price: $1,080.00

Our Price: $972.00

You Save $108.00 (10%)
loading...
Overview of Thunderheader Black Long Style High-Performance 2-Into-1 Exhaust System with Heat Shields - 1054SB
  • 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
  • Includes a set of full-coverage heat shields


Included Items:

(1) Black head pipe assembly with heat shields

(1) Black heat shield

(1) Black muffler assembly

(1) Black steel mounting bracket

(1) Black steel 1-3/4" Pinch clamp

(1) 2-5/8" Black exhaust clamp

(1) Black hose clamp # 56

(2) Black hose clamps # 40

(6) Black hose clamps # 24

(1) 5/16"-18 x 1-1/2" Hex head bolt

(2) 5/16"-18 x 1" Hex head bolt

(6) 5/16" Flat washers

(1) 5/16" Split lock washer

(1) 5/16"-18 Hex nut

(2) 5/16"-18 Nylock nuts

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 Thunderheader Black Long Style High-Performance 2-Into-1 Exhaust System with Heat Shields - 1054SB

Color - Primary Black
Style Straight-Cut Tip
Type 2-Into-1 System
Units Each
Weight 24.85 lbs
Specs for Thunderheader Black Long Style High-Performance 2-Into-1 Exhaust System with Heat Shields - 1054SB
Color - Primary Black
Style Straight-Cut Tip
Type 2-Into-1 System
Units Each
Weight 24.85 lbs
Fitment for Thunderheader Black Long Style High-Performance 2-Into-1 Exhaust System with Heat Shields - 1054SB
See if this part fits your ride

Part 4408741 fits the following machines

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
  • 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
  • 2008 Harley-Davidson Street Glide (EFI) - FLHX
  • 2007 Harley-Davidson Street Glide (EFI) - FLHX
There are no reviews for this item. Write Review
Start typing your question and we'll check if it was already asked and answered. Learn More
Browse 1 question Browse 1 question and 1 answer
will the o2 sensors screw into these?
shawn m on May 5, 2018
BEST ANSWER: Yes
Instructions and Manuals for Thunderheader Black Long Style High-Performance 2-Into-1 Exhaust System with Heat Shields - 1054SB

You May Also Be Interested In