Two Bros exhaust
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The two bros is loud, you can get the Motoworks SR4 with a core silencer which is what I have and it's not as loud and perform as good but don't forget that you will also need a tuner; either a Dobeck or PCIII or PCV. The Barker exhaust sounds real nice.
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93 Posts
I have the two bros exhaust on my bike now. I am an ex-patrol deputy (now detective!!) and I have a decibel meter from when I worked on the road. The TwoBros is LOUD!! It was a smoking 105.7dB on the meter. I have installed the P1X tip and it knocked it down to 97.3dB. It's a huge difference when it comes to riding around homes and camp sites. I have had no issues with riding at the local places around where I live. My TwoBros exhaust is powdercoated black...I have a thread with photos a few lines down from here actually. And its for sale!!
Chance
Chance
Chance,
That P1X is not good for our bike, it'll create too much back pressure, this is what I was told by their technicians and not the salesman. Had one of those and removed it once the tech told me of the back pressure issue.
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93 Posts
Oh good. I just realized that i have the PX tip. Thats the one that allows you to still run the spark arrestor. I know that the P1X has a tube that runs into the bore of the pipe, and has what appears to have some type of restrictor plate. The on I have in it now is just flat...I'm not sure how it makes it any quieter, but it does. I doesn't seem to have any effects on the performance. And after checking the plug, all seems well, it's just running pretty rich. Dyno tune is in the making, I just have to schedule.
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2,932 Posts
I wouldn't take that too seriously, I don't think any aftermarket exhaust is more restrictive than the stock one. It may not make as much power with the tip compared to without but I'd put good money on the 2bros with any tip flowing better than stock.
If I was you "Chance" I would check with 2Bros which I did when I had mine, they are the ones whom built it so they know more.
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93 Posts
Yeah thanks guys. There's a lot of info and opinions on these forums, it's hard to say what is good stuff and bogus. I am going to be getting rid of the Two Bros Exhaust pretty soon. I'm not sure what I'm going to go with. I would like to get hold of that exhaust Wayne Matlock has on his bike....
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1,400 Posts
you mean the Big Gun?
Chance
If you have the P1 then you are ok, just check with 2Bros. From what I can see on the site, there are allot of people that are using the FMF. I had the motoworks SR4 and really like it but did replace it because I wanted my Supertrapp exhaust.
This is the response I received from 2Bros;
I would not recommend a P3 or P4 for the 700xx as they are too restrictive. The P1 is the only silencer I would recommend. Here is my opinion:
P3 : 250cc and under
P4: 250cc - 450cc
P1: Anything above 600cc
P1-R: Liter bikes with dual canisters.
Otherwise there is too much restriction and all the addition backpressure and heat creation could malfunction the system
P3 : 250cc and under
P4: 250cc - 450cc
P1: Anything above 600cc
P1-R: Liter bikes with dual canisters.
Otherwise there is too much restriction and all the addition backpressure and heat creation could malfunction the system
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