EXHAUST , True Duals or? - Road Glide Forums
*General Road Glide Discussions/Pictures Post general Road Glide discussions with photos.

LinkBack Thread Tools Display Modes
post #1 of 18 (permalink) Old 04-13-2019, 12:03 PM Thread Starter
TulsaGlide's Avatar
Join Date: Apr 2019
Posts: 54
EXHAUST , True Duals or?

Im curious , 2x2 or 2x1 , my bike is pretty much stock and i dont plan to do anything other than a few upgrades and all a little at a time .

I realize the 2x1 get more power , but that might be negligible , i can still ride long distance , pass vehicles etc,. I dont have the bucks for stage series of upgrades so im just going a lil at a time , this is my forever bike now .

Anyway can you wrenches tell me the good stuff and bad of each

To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.

1984 Harley Wide Glide / 2002 Indian Spirit / 2003 Indian Chief Vintage / 2017 Harley Road Glide Special
TulsaGlide is offline  
Sponsored Links
post #2 of 18 (permalink) Old 04-15-2019, 02:58 PM
taoist's Avatar
Join Date: Jan 2011
Location: 10-0-C
Posts: 181
2-1 Or 2-2

Most riders agree that putting true duals on a bike will kill the low end torque...At least it did on mine. After a bit I changed over to V & H power duals and the bike ran great and a lot cooler with those pipes and mufflers plus it had a lot of grunt on the low end. Also, 2-2 pipes will make the bike run hotter than usual. The pipes need to be joined at some point to help ease exhaust gas scavenging and with true duals that doesn't happen. It is harder for each cylinder to push the exhaust gas out by itself than with help from the other cylinder.
You don't mention what year your bike is or which motor it has.
If you want a 2-1 pipe, I personally would recommend a RB racing pipe. They make great power and the quality of workmanship is unsurpassed. I have one on my 06 Dyna and I love it. You have to call them and order it and then wait. They are made one at a time as they are ordered.They won't charge your credit card until they ship it from California. Sometimes the wait can be rather long but to me it was worth it. If you are a veteran the owner will give you a 10% discount.
On my 2017 Roady, I still have the stock head pipes with RC Exhaust mufflers and I'm very pleased with both the sound and performance. They get louder with age but no so loud as to be obnoxious or drone on long interstate trips.
It's your choice as to what you put on your bike but I personally would stay away from true duals.
The power that is gained from the pipes are not dyno only numbers, as you can really feel them on your seat dyno as well.

To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.
2006 Black 95 cu in Dyna Street Bob
2017 Black Road Glide Special

Last edited by taoist; 04-15-2019 at 03:05 PM. Reason: Add Info
taoist is offline  
post #3 of 18 (permalink) Old 04-15-2019, 06:20 PM
kiwidave's Avatar
Join Date: Sep 2013
Location: Melbourne, Australia
Posts: 230
I have the V&H true duals (no cat), along with S&S Grand National mufflers and the H-D torque cam.

I am also aware of the warnings about losing low-end torque, but i am all about the aesthetics and I just don't like that lump of metal where any of the 2-1-2 pipes meet.

I find have more power and torque than I have ever known. Much of that may be due to the cam. The exhaust ain't hurting my feelings though.

But then, I am new to this bike, and coming straight off a 1980 FXWG ;-)
kiwidave is offline  
post #4 of 18 (permalink) Old 04-15-2019, 07:55 PM
Life Member
Big_gary's Avatar
Join Date: Dec 2010
Location: GA.
Posts: 7,925
Couldn't have said it better than the two above. Are you an aesthetics guy or a gear head ? I do believe you'll have more than enough power with the duels on the M8 ,but you will notice the difference.

2010 FLTRX , Stage 1, 13" Madstad, Mono tubes, SuperShox, Heritage style bars. Alpine CDE-HD149BT,Soundstream Picasso Nano Series PN4.520 , 5X7 and 6.5 Infinity Kappa speakers
If I have to explain ,you wouldn't under stand anyway.
Big_gary is offline  
post #5 of 18 (permalink) Old 04-15-2019, 08:47 PM
mwattpusher's Avatar
Join Date: Apr 2017
Posts: 67
You can enjoy the benefits of a 2-1 and a 2-2 exhaust with a 2-1-2 headpipe and losing the cat. 2 of my favorites are the Fullsac MX and the Fuel Moto headers.
RedBlack likes this.
mwattpusher is offline  
post #6 of 18 (permalink) Old 04-15-2019, 09:20 PM
Life Member
Thermodyne's Avatar
Join Date: Jan 2014
Location: South Central PA
Posts: 1,609
+1 on the 2-1-2.

Its the best all around pipe, and some of them will even hide behind the oem shields.

To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.
Thermodyne is offline  
post #7 of 18 (permalink) Old 04-15-2019, 09:42 PM
Life Member
bucketlisthd's Avatar
Join Date: Jun 2012
Location: W.MA.
Posts: 1,792
I've got a Cobra 2-1-2 "H" pipe. It looks like duals, you can't see the crossover. It's been installed since 2015 and has held up well.

'15 Roadglide Special
'87 FXR 100"
'79 Goldwing cafe
bucketlisthd is offline  
post #8 of 18 (permalink) Old 04-16-2019, 04:42 AM
Life Member
Join Date: Sep 2010
Location: FL
Posts: 6,287
For me, I purchased a oem header with the cat removed from the auction site. I get a bit more sound from the exhaust and have reduced heat.

2018 FLTRXS, Vivid Black, KW Slicer Front Fender, Sundowner Seat/Modified by Mean City Cycle
FLTRXS18 is offline  
post #9 of 18 (permalink) Old 04-17-2019, 01:36 PM
Heavy Metal's Avatar
Join Date: Oct 2017
Posts: 400
What about 2-1-2, got fuel moto jackpot headers going on mine.
Heavy Metal is offline  
post #10 of 18 (permalink) Old 04-17-2019, 01:44 PM
Life Member
wevsspot's Avatar
Join Date: May 2015
Location: God's Country
Posts: 1,725
Originally Posted by Heavy Metal View Post
What about 2-1-2, got fuel moto jackpot headers going on mine.
Good choice. To maintain the stock appearance and keep some of the low end torque, just about any 2-1-2 header is going to perform better on the low end than true duals (assuming no other engine work).

A good 2-1 setup will usually give the best pull bottom to top and there's a reason that many tuners would prefer to tune a 2-1...........

I personally wouldn't put true duals on a touring bike unless there was other motor work that would give you a reason to really need duals.

To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.
wevsspot is offline  

Quick Reply

Register Now

In order to be able to post messages on the Road Glide Forums forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.

User Name:
Please enter a password for your user account. Note that passwords are case-sensitive.


Confirm Password:
Email Address
Please enter a valid email address for yourself.

Email Address:


Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page
Display Modes
Linear Mode Linear Mode

Similar Threads
Thread Thread Starter Forum Replies Last Post
Exhaust question (Dealer tech vs wisdom of the people) 2013-CVO-110RG Intake and Exhaust 14 05-31-2013 01:58 PM
CVO RoadGlide Added true Duals OMG Billygiles Intake and Exhaust 5 08-10-2012 12:03 PM
True Duals on 2012 RGU Speedie Intake and Exhaust 26 05-19-2012 11:40 AM
True duals Too Short Intake and Exhaust 9 04-03-2012 10:28 PM
Thunderheader true duals/MGS true duals JKRSDETROIT Intake and Exhaust 2 03-26-2012 12:06 PM

Posting Rules  
You may post new threads
You may post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On

For the best viewing experience please update your browser to Google Chrome