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[bikerbum11]

Okay, I did a little searching on this topic but I'm looking for a little input.
I put a S&S header (2-1-2) with VH mufflers on my new 13 CVO Ultra. Love the sound and so do my friends. Looking to get the same sound for my wife's street glide but she has everything blacked out.
If you put the black S&S header next to the black VH mufflers, there is a big difference in the color. VH makes a black head pipe that looks like the S&S but it's a "true dual."
My dealer is telling me to stay away from the true duels and either go with 2-1-2 or 2-1.
What's your thoughts on true duals? what are the down falls?

[2k]

What was his reason for saying this? I know the Fullsac system (basically true duals) when set up with the proper muffs will make as much power as any.

[bikerbum11]

What was his reason for saying this? I know the Fullsac system (basically true duals) when set up with the proper muffs will make as much power as any.

The Fullsac system is not "True Duals" it's a 2-1-2 system.
I had the Fullsac system on my 10'CVO and was not 100% happy with it. That's why I went with the S&S and Vance and Hines mufflers this time.
I'm trying to put the same mufflers on my wife's street glide in black, but other than going with Vance and Hines Power Duals, all they have is the "Dresser Duals" and they are "true duals" My dealer told me to stay away from "true duals" and I'm wondering why???

[08glide]

my dealer said same thing. they say you'll get a few more ft # torque & hp (2-4). with 2-1 over true duels. does this little difference really matter to your wife? I'm running python true duels on my 08 sg & love them. love the sound, looks & took away some heat. still gettin 42mpg around town, on long trip with buddy ( this summer) 54-49 mpg. motor is not stock. I don't see that you can notice that much in difference, especially with out a dyno sheet in front of ya. good luck.

[CVO Brian]

Every Dealer/ Service guy is different and has their personal preference. I've run them all and you will never be able to tell the seat in the pants difference just by a head pipe over another manufacture's head pipe. I myself prefer my Dresser/True Dual VH along with the sound I get from my Rineheart 4" mufflers. Most service guys hate the VH dresser duals because they are a little harder to install and don't get to make up their book time and extra. True, 2 into 1 is gonna give you a little more power and I had one on my green bike pictured but out the side. The one lone muffler out the rear look is not a good look in my opinion. Get your true duals and worry about the power in your tuner and a cam.

[ffltjeff]

Have you considered V&H Power Duals?

[bikerbum11]

Have you considered V&H Power Duals?

Yep, don't care for the looks of them. That's why I put the S&S header on my CVO. Looks a littler more on the stock side, or even more of a true dual look ( but it's not)

[CowboyBagger]

The true duals have less back pressure, therefore more difficult to tune.  Fullsac makes a great 2-1-2.  Drago's Bike Works makes a great 2-1.  The "Dragula" or the "S/C/S/4

Cowboy

[barefoot3zk5]

I'm alll in on Frank's Dragula 2-1 .. this ole bag showed 127hp/125tq after Doc dialed it in .. I'm happpy ..
love the performance and the sound is the NUTZ.. even Ken likes em on that ol varmint of his .. check em out ..

[timo482]

true duals really are great for flat out racing - i.e. 5000 rpm plus riding.  and they look cool.

but for around town they have less torque at the rpm we all ride at. but they look cool.

if they are tuned extremely well you can get the torque at 2500 to 3000 up to almost what a stock system is to start with - if you are lucky.

its a truth most dont want to hear. but changing pipes is usually done mostly for looks - and for looks do whatever you want. just dont think you are making it go faster. think that you want it to look better and dont want to hurt drivability.

that said - some 2-1-2 systems and some 2-1 systems DO increase torque at the speeds we ride at. but you need to be choosing for power rather than looks to get there.

to

[bikerbum11]

true duals really are great for flat out racing - i.e. 5000 rpm plus riding.  and they look cool.

but for around town they have less torque at the rpm we all ride at. but they look cool.

if they are tuned extremely well you can get the torque at 2500 to 3000 up to almost what a stock system is to start with - if you are lucky.

its a truth most dont want to hear. but changing pipes is usually done mostly for looks - and for looks do whatever you want. just dont think you are making it go faster. think that you want it to look better and dont want to hurt drivability.

that said - some 2-1-2 systems and some 2-1 systems DO increase torque at the speeds we ride at. but you need to be choosing for power rather than looks to get there.

to

I agree, we are changing out the exhaust for both looks and sound. If we wanted performance, I'd be looking at a 2-1 system for the bike.

[whoop72]

If you're really interested in true duals, you should look at mgscustombikes.com.  From what I have read on another site, these things look really good and perform.

[willyB]

Here's a thought:

How many years have Harley's been running true duals?

With "tradition/nostalgia" being the trade mark of the popularity of Harley's why would you want it to no longer sound like a Harley.

I'm running a cat less stock header with V&H mufflers and I think it no longer sounds like a Harley. Maybe it picks up a few points of power but then again I'm running a stock motor, not something that's pushing 130 HP.

[bikerbum11]

Here's a thought:

How many years have Harley's been running true duals?

With "tradition/nostalgia" being the trade mark of the popularity of Harley's why would you want it to no longer sound like a Harley.

I'm running a cat less stock header with V&H mufflers and I think it no longer sounds like a Harley. Maybe it picks up a few points of power but then again I'm running a stock motor, not something that's pushing 130 HP.

Not sure how many years Harley have been running true duals...  I've been riding since the early 90's and all my Harley's had a cross over on the head pipe. That hasn't seamed to change over the years. Maybe the style, placement or configuration has changed but most have had the cross over.

I'll agree that my CVO doesn't sound anything like my older Harley's, but then again all the bikes were running carburetors and not full of all this electronic BS, we have now.

[dayne66]

If you're really interested in true duals, you should look at mgscustombikes.com.  From what I have read on another site, these things look really good and perform.

Interesting...they have the back going to the left again.....should help with heat on the right....at least it moves some of it to the other side.