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[bribe36]

This may be a silly question, but why are so many people going with the Fullsac cores on their 09 SERG?
For a bike that cost $30K plus, a $100.00 set of cores seems like an odd choice. Don't get me wrong, I think they are a great product and I installed the 2" cores on my SERG.  I choose them because I love the look of my bike and I only wanted to improve the sound while maintaining the stock look. I don't plan on doing any other engine mods and this was the most practical way to get the end result I was after.

I think I've read all the post about on this topic, many written by folks more knowageable about bikes than I. They talk about about the motor upgrades they are doing and I keep thinking how much this "could" cost. I do realize that there are limited exhaust systems available at this time, so I'm thinking for some this must be a temporary fix. But are there those of us who are going to spend thousands on motor upgrades and keep the Fullsac cores?

[Zipper104]

I just put 2" Fullsac baffles in some stockers off an '07 SERK today. I'm going to the Fullsacs AFTER a build hoping for some sane db levels while not killing power or rideability of my bike.  I'll know one way or another pretty soon. Good threads in this section.

Had a bi*** of a time with the welds, BTW.

[LarryB]

The idea seems to be "keep the look of the stock set up" Fullsac cores gives you that ability, cheap. after the 1st of the year fullsac is coming out with True duals that work with the stock heat shields and the stock mufflers with his cores in them. I for one, do not want  muc up the look.

[Hugh Janis]

Bribe, your 1st paragraph pretty much answers your own question.  A freer flowing exhaust will improve engine performance provided it is tuned to match.

[Ironhorse]

It allows you to keep the OEM look, and more importantly the HD EPA numbers stamped on the pipes. That may be enough to get you out of a fix it ticket in some places.

[Iglide]

Love the looks of the stock muffs and their fit, under the bag skirts.

[dartman]

Yes Indeed, HD did it right on the SERG Ive got aftermarket Mufflers stacked up like cordwood, and none of them even the 4 inchers look or fit nearly as good as the OEM pipes, I kept my stockers intact and put the fullsacs in a set of 07 Road King CVO pipes I had laying around, they are identical except for the Convertors that were removed anyway.

[bribe36]

So far it appears that everyone agrees that it's important to keep the stock look. That does surprise me somewhat as I've always thought we all wanted to put our own mark on our bike. 
But what about performance. With so many adding hi flow breathers, SERT's, cams, head work and spending a small fortune, are these $100.00 cores going to give the best possible results, especially when compared to say a set of $1500 pipes?

[dartman]

Probably not the absolute best, but no matter how much you spend you cant make a Kentucky Derby Winner out of a Clydesdale, That $1,500.00 might give you an additional 3 hp over your 2 inchers if your bike is set up properly, Your Call

[guppytrash]

For me it has nothing to do with keeping it stock looking.
If you could buy these mufflers in the HD bible I would guess you would be north of $650.00 once you add the price of heat shields and two end caps.
I don't spend money replacing something that I think looks good.

As far as performance if you believe that the amount of money you spend on an exhaust is proportionate to the amount of performance received I would love to sell you some old mufflers I have laying in my garage.  I can make them very expensive. (ie high performance)

Mods for me are just to uncork what the EPA has forced HD to do.
 
LET THIS THING BREATHE!

CC removed
Ness Big Sucker
SERT
Fulsac 1 3/4

I did not want a loud ear ringing aftermarket exhaust...I liked the monster ovals and think they look great but too many riders here have said they were not all that quiet and some have taken them back off.
My 1.75 fulsacs are not too loud and still have the performance of a straight through exhaust.
Better yet one bolt and I could go back to stock.

[DonT]

To answer the question; they work quite well, good sound, good perf. and if you like the stock look, its a no brain'r.  Could not be happier with my 2" on my 08 SERK.

[LETS_ROLL]

Ditto to all.  Looks, sound, performace.  I got to tinker with the bike on a cold day.  The price is very reasonable to boot.  Let's Roll

[1abastarsmda]

I absolutely planned on buying a full system for my bike, as soon as available.  I have now been convinced that the 2 - 1 - 2 stock system, with catalytic converter removed and Fullsac inserts will be just as good as anything else out there, and as everyone else seems to agree upon, the stock mufflers look nicer than any of the alternatives out there.  Unless you want to go to a 2 - 1 system, I am doubting that you will get any noticeable performance gains out of going with a full system vs Fullsac.  There are other companies out there that make the muffler cores also, but as you can see, there are enough endorsements on this site to satisfy me.  I have ordered the Fullsac's and will have them on my next week at the latest.  The thoughts of spending in the $1500 range vs about $140 sure makes taking a chance on these more than worth it.  If I am not happy with them, I would think that I could find a quick buyer on here to take the completed mufflers off my hands for the price I paid for the cores.  At that point, I can always switch to a full system and be out nothing but some time.

[HOGMIKE]

What most have said.....stock cvo mufflers look pretty good on the bikes. Fullsac cores will wake up the motor and are not too loud. We have installed them here on stock 88" 96" 110" and 113" hot rod motors, and they look stock and sound "almost" stock at cruise.