2 into one nightstick - 2012 flhr - possible?
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Stellar HDF Member
Joined: Feb 2006
Posts: 2,515
Likes: 444
From: South Florida
2 into one nightstick - 2012 flhr - possible?
is it possible to mount a 2 into one nightstick to the stock header of the 2012 flhr? Is there a major performance increase, and do they do a reflash and air cleaner with it?
Outstanding HDF Member
Joined: Jun 2008
Posts: 2,132
Likes: 25
From: NorCal
The exhaust will actually be more restrictive than stock. The Nightstick has one 1-3/4" inlet, versus two 1-3/4" on your stock mufflers.
If it was a normal 2-1 with a large collector and, say, a 2.5" or 3" inlet on the muffler (like a Thunderheader, Bosszilla, Dragos or Pro-Pipe then you'd have a performance increase with the other mods.
You may gain a little torque but lose up top due to more backpressure. I've got a complete '10 FLHX exhaust if you want to try it. Just pay shipping...
If it was a normal 2-1 with a large collector and, say, a 2.5" or 3" inlet on the muffler (like a Thunderheader, Bosszilla, Dragos or Pro-Pipe then you'd have a performance increase with the other mods.
You may gain a little torque but lose up top due to more backpressure. I've got a complete '10 FLHX exhaust if you want to try it. Just pay shipping...
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Stellar HDF Member
Joined: Feb 2006
Posts: 2,515
Likes: 444
From: South Florida
The 2 into 1 is 1.75?
80881-10 is the part number I am talking about.
I have kitty in the pipes.
Going to leave it there. The talk on those pipes is with a good stage one reture, that they work pretty well. Face it, if I can't get a Harley to run ok with a 103 and a 6 speed, EPA, or not, then I might as well go back to an 80 inch Evo, which moved the weight pretty well.
Now that that's covered, I have no idea why people relate sound to HP/TQ. What I want is performance. What I want is legal performance. Not really difficult, if you know what you're doing. I'd recam before I'd rip the cat, only because I kind of think that it's a good idea, as bad as it sucks. Stock this tank has grunt that I never knew existed. I'd simply like to smooth it out at the bottom end. I want more torque, and I want it instant on, but also, good on the highway to about 85. That's where I ride my Harley. Pretty sure it can easily be done.
Back to the original question. Can a 2 into 1 pipe be mounted on the stock header? Does the crossover come off and leave a 2 into 1 header, or does the header need to be swapped too? How much weight, and what are the heat issues with the nightstick 2 into 1? More or less? Tunable disks sound ok, and I could stay 2 into 1 into 2 if it was cheaper than a header swap. Just no need right now. Since the cat is better hot ( the way it works ) I might wrap it to keep radiated heat down as well. With the velocity increase at the tips, the hotter inside the pipe the better.
80881-10 is the part number I am talking about.
I have kitty in the pipes.
Going to leave it there. The talk on those pipes is with a good stage one reture, that they work pretty well. Face it, if I can't get a Harley to run ok with a 103 and a 6 speed, EPA, or not, then I might as well go back to an 80 inch Evo, which moved the weight pretty well.
Now that that's covered, I have no idea why people relate sound to HP/TQ. What I want is performance. What I want is legal performance. Not really difficult, if you know what you're doing. I'd recam before I'd rip the cat, only because I kind of think that it's a good idea, as bad as it sucks. Stock this tank has grunt that I never knew existed. I'd simply like to smooth it out at the bottom end. I want more torque, and I want it instant on, but also, good on the highway to about 85. That's where I ride my Harley. Pretty sure it can easily be done.
Back to the original question. Can a 2 into 1 pipe be mounted on the stock header? Does the crossover come off and leave a 2 into 1 header, or does the header need to be swapped too? How much weight, and what are the heat issues with the nightstick 2 into 1? More or less? Tunable disks sound ok, and I could stay 2 into 1 into 2 if it was cheaper than a header swap. Just no need right now. Since the cat is better hot ( the way it works ) I might wrap it to keep radiated heat down as well. With the velocity increase at the tips, the hotter inside the pipe the better.
Cruiser
Joined: Aug 2005
Posts: 110
Likes: 0
From:
Friend has a stock FLHX,96", with factory 2 into one exhaust.
Dealer installed a nightstick muffler and after a couple hundred miles
the muffler is yellowing.
Dealer said reflash wasn't needed,but I'd say it's running to hot or the muffler is crap quality.
Dealer installed a nightstick muffler and after a couple hundred miles
the muffler is yellowing.
Dealer said reflash wasn't needed,but I'd say it's running to hot or the muffler is crap quality.
Last edited by Roadie 49; Aug 16, 2012 at 08:14 AM.
Account Retired
Joined: Oct 2009
Posts: 3,245
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From: Here
The header has to come off because your stock header is longer than a 2into1 header. I ended up going with a 2into1 header off a 2010 Street Glide and bought a 2into1 Powertube muffler from Jamie. If you go that route you will need a set of 2into1 chrome header shields too. I didn't like the setup and went back to my stock header. I still have it boxed and it's in great condition if you want it.
Intermediate
Joined: Mar 2011
Posts: 41
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From: Colorado
I have an '11 FLHRC. You could take the left side exhaust off and cap the outlet from the cat/collector portion. I don't think that would gain you anything except the look you want. The big question comes down to the inlet diameter of the new muffler matching to the outlet of the collector. The catalog doesn't say what that is... I run Jackpot pro touring mufflers with their asymmetrical baffles. The left has a restrictor ring in it. It essentially acts almost like a 2 into 1. I run this with the stock headpipe minus cat, with great results.
Road Master
Joined: Aug 2010
Posts: 950
Likes: 19
From: Southcentral, OK
The header has to come off because your stock header is longer than a 2into1 header. I ended up going with a 2into1 header off a 2010 Street Glide and bought a 2into1 Powertube muffler from Jamie. If you go that route you will need a set of 2into1 chrome header shields too. I didn't like the setup and went back to my stock header. I still have it boxed and it's in great condition if you want it.
The 2:1 Mufflers are designed to work with the stock 2010 SG headers. They are 4" shorter behind the collector, so the 2:1 Mufflers are 4" longer.
I just did this swap into the 2010 2:1 Header on my 2012 RGC. And just as Ronp said, you will at least need the 2010 heatshield for the collector, as it is 4" shorter also. (the rest of the heatshields are interchangeable from what I could tell)
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Account Retired
Joined: Oct 2009
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From: Here
I have an '11 FLHRC. You could take the left side exhaust off and cap the outlet from the cat/collector portion. I don't think that would gain you anything except the look you want. The big question comes down to the inlet diameter of the new muffler matching to the outlet of the collector. The catalog doesn't say what that is... I run Jackpot pro touring mufflers with their asymmetrical baffles. The left has a restrictor ring in it. It essentially acts almost like a 2 into 1. I run this with the stock headpipe minus cat, with great results.
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Road Master
Joined: Aug 2010
Posts: 950
Likes: 19
From: Southcentral, OK
I have an '11 FLHRC. You could take the left side exhaust off and cap the outlet from the cat/collector portion. I don't think that would gain you anything except the look you want. The big question comes down to the inlet diameter of the new muffler matching to the outlet of the collector. The catalog doesn't say what that is... I run Jackpot pro touring mufflers with their asymmetrical baffles. The left has a restrictor ring in it. It essentially acts almost like a 2 into 1. I run this with the stock headpipe minus cat, with great results.
When I swapped headers, I didn't have the new muffler yet, so I ran to the local muffler shop and had them make me a 4" extension and slapped on the stock exhaust on for a couple days waiting on FedEx. The only difference is the length.
Off the top of my head; Thunderheader, Rush, V&H, and BUB make 2:1 mufflers for the 2010 setup. I am sure there are others, but those the ones I am sure of.
Ultimate HDF Member
Joined: Mar 2012
Posts: 6,129
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From: Santa Cruz
It has been done before using a freeze pug. Pretty easy. Can't imagine there is any performance gain going to less flow than stock?