Big City Thunder Baffles???
Road Master
Joined: Feb 2013
Posts: 993
Likes: 1
From: columbus, ohio
yeah, i've seen those too, but i was thinking the BCT's might be a bit better. here's my thinking: the thunder inserts are basically just the lollipop, correct? pretty sure it is. anyway, the BCT's seem like they are a mini baffle with the lollipop welded in there. the reason i feel this may be more beneficial is because with the extra baffle piece of the BCT, you are forcing the exhaust into a smaller compartment and providing just a bit more back pressure vs. the thunder inserts. is my reasoning incorrect here? it does look like the BCT tapers a bit at the end, restricting the airflow just a bit more than the thunders....thereby creating a bit more low end torque. right?
Cruiser
Joined: Apr 2013
Posts: 175
Likes: 1
From: parma, Ohio
I would agree. I seen them too. But felt I better off spending the money on BCT.
From everything I read by doing a BCT search in google everyone said the same thing 99% of the time. Still loud, Lower tone, and good low end torque. Found people talking about them on 3-5 different forums. Only came across one person bitching about what he got for $80. But he was still happy with the results.
From everything I read by doing a BCT search in google everyone said the same thing 99% of the time. Still loud, Lower tone, and good low end torque. Found people talking about them on 3-5 different forums. Only came across one person bitching about what he got for $80. But he was still happy with the results.
yeah, i've seen those too, but i was thinking the BCT's might be a bit better. here's my thinking: the thunder inserts are basically just the lollipop, correct? pretty sure it is. anyway, the BCT's seem like they are a mini baffle with the lollipop welded in there. the reason i feel this may be more beneficial is because with the extra baffle piece of the BCT, you are forcing the exhaust into a smaller compartment and providing just a bit more back pressure vs. the thunder inserts. is my reasoning incorrect here? it does look like the BCT tapers a bit at the end, restricting the airflow just a bit more than the thunders....thereby creating a bit more low end torque. right?
Extreme HDF Member
Joined: Sep 2006
Posts: 10,114
Likes: 29
From: Vancouver B.C. Canada
To be honest, if I knew the BCT baffle is just a pipe reduction, I should have my buddy to make me one at his muffler shop. $110/pair is paid for oversized engineering and a T-shirt lol. 
Elite HDF Member
Joined: Oct 2009
Posts: 4,416
Likes: 88
From: San Quirino, Italy
Very true...I have the QQ ones and they are awesome. Not quiet at all but a MUCH deeper tone and the raspyness of the Big Radius is gone...
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Cruiser
Joined: Apr 2013
Posts: 175
Likes: 1
From: parma, Ohio
People seem to forget about that. Also I don't weld nor am I gonna buy a welder for the random few times I would use it. $80 bucks is good to me. Wasted way more than that out drinking before. Lol
Road Master
Joined: Feb 2013
Posts: 993
Likes: 1
From: columbus, ohio
Very good point, not to mention that people will drop $80 on a thin metal a/c cover, cam cover, or other small decorative item and not even blink an eye. I would say that EVERY item you could put on a Harley is grossly overpriced for what it is. At least the bct can alter performance...and sound which we all love.