Overview of Thunderheader 2 into 1 High Performance Long Style Exhaust System - 1054
Included Items: (1) Exhaust Header (2) 5/16-24 x 3/4 Hex Bolts (6) 5/16 Plain Washers (1) 5/16 Lock Washer (1) 5/16-18 Nut (2) 5/16-24 Lock Nut (1) Mounting Bracket (1) 5/16-18 x 1 Hex Bolt (1) Clamp 3/4 (1) Clamp 5/8 (1) Collector NOTE: This is a 2 into 1 long style (right side only) 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 |
Specs for Thunderheader 2 into 1 High Performance Long Style Exhaust System - 1054
| Finish | Chrome |
|---|---|
| Style | Tapered Tip |
| Type | 2-Into-1 System |
| Units | Each |
| Weight | 19.25 lbs |
Specs for Thunderheader 2 into 1 High Performance Long Style Exhaust System - 1054
| Finish | Chrome |
|---|---|
| Style | Tapered Tip |
| Type | 2-Into-1 System |
| Units | Each |
| Weight | 19.25 lbs |
Fitment for Thunderheader 2 into 1 High Performance Long Style Exhaust System - 1054
See if this part fits your ridePart 251458 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
- 2007 Harley-Davidson Road King Custom (EFI) - FLHRS
- 2008 Harley-Davidson Street Glide (EFI) - FLHX
- 2007 Harley-Davidson Street Glide (EFI) - FLHX
4.3 / 5.0
12 Reviews
Finish
4.7 / 5
Performance
4.9 / 5
Finish
4 / 5
Performance
5 / 5
instant horsepower
best addition to my motor yet..horsepower increase you can feel in the seat of your pants ...product was expertly packaged and arrived in perfect condition .....
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January 18, 2011
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Finish
5 / 5
Performance
5 / 5
The right pipe-apology long review
The right sound, easy to install, 10HP, 20FtLbs Torque bolt-on. Get the shield kit or cook your leg.
Yes it's a bit louder than VH duals. But a deeper, respectful, commanding duntDunt. Not the obnoxious blatBlat from the BigRadius 2-1.
So I got a free Dynotune from a dealer, who dyno'd it the next week with only this $650 mod (with shields). From 94HP/104# torque to 104hp/124#torque.
Provides the performance I needed from stock on my '09 FXDFSE. Dynotune is a must from stock-it turned my skoot to a monster.
Buy 2 rear tires, cause they won't last.
Comes with O2 ports, perfect fitment, mounting bracket and all you need minus the head port gasket (why not? -it's right there and $5 pair).
25 mins to install, no fancy tools except a swivel socket extension. And ale-pale Ale.
Yes it's a bit louder than VH duals. But a deeper, respectful, commanding duntDunt. Not the obnoxious blatBlat from the BigRadius 2-1.
So I got a free Dynotune from a dealer, who dyno'd it the next week with only this $650 mod (with shields). From 94HP/104# torque to 104hp/124#torque.
Provides the performance I needed from stock on my '09 FXDFSE. Dynotune is a must from stock-it turned my skoot to a monster.
Buy 2 rear tires, cause they won't last.
Comes with O2 ports, perfect fitment, mounting bracket and all you need minus the head port gasket (why not? -it's right there and $5 pair).
25 mins to install, no fancy tools except a swivel socket extension. And ale-pale Ale.
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January 28, 2014
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Finish
4 / 5
Performance
5 / 5
No Review Title Entered By User
Need longer bolts to mount bracket to transmission
Tight fit between pipe and foot-board - slotted hole would be helpful
Tight fit between pipe and foot-board - slotted hole would be helpful
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January 19, 2011
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Finish
5 / 5
Performance
5 / 5
Great addition
I recently purchased a 2001 Dyna Low rider with 7000 miles from a great previous owner that did very little to the bike but maintain it. He did put a Mikuni carb on it. My plan was to do the bike up right and quick..two weeks...but tasteful. I added the intake and cleaner and quite a few other items to dress the bike up to my style. Most importantly I waited until last to do the exhaust, so I called Mikuni and talked to Steve...told him what I was doing and asked for his advice. Afterwards, given my style I was going for and the performance I was seeking, he offered the Thunderheader as a choice. He explained that since I lowered the bike and wanted performance, this was a good choice. I forgot to mention, this is my first bike, and I did all the work and upgrading myself. This pipe couldn't have fit better and easier. Awesome piece of equipment!
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July 11, 2013
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Finish
4 / 5
Performance
5 / 5
wanna make your bike sound like a drag bike?
very good investment for the price. It is only loud when you really twist the wick. Really increased the torque curve.At 65 or above you will really feel the push all the way up to where you think you are going to take off.At 120 you still can feel the torque pushing you back.
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January 25, 2012
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Finish
5 / 5
Performance
5 / 5
Thunderheader Exhaust
Love the way this exhaust sounds on my fatboy. My husband has one on his roadking and we are very impressed!
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January 6, 2012
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Finish
5 / 5
Performance
5 / 5
No Review Title Entered By User
No Review Text Entered By User
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May 18, 2010
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Finish
5 / 5
Performance
5 / 5
Rumble
Just what I had heard, great sound and looks great. Fast shipping and great communication
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December 5, 2015
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Finish
5 / 5
Performance
5 / 5
Great Pipes
Looks ands sounds great. It is bolt on horsepower for sure.
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October 23, 2012
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Finish
5 / 5
Performance
4 / 5
No Review Title Entered By User
One of the easiest pipes I've installed. (and I've installed many) It has that one and only thunderheader sound. Very good finish, I would recommend to others.
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February 28, 2012
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