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I blew up my 2011 110 ci street glide. I just ordered a 124” s and s , I’m putting a dual header pipe on it with dual slip ins. I was going to put the borzilla on but they are out of stock. With this still run good?
 

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The head pipes also need to be larger 8nside diameter as well.... these large performance engines need a higher flow volume, than a great majority of aftermarket head pipes are capable of flowing...
The 124 pulls hard, all the way to the rev limiter in every gear... if yours feels as though it is not building rpm and road speed, especially in 4th and beyond,,, look at the exhaust..
 

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2007 Dyna Street Bob
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Duals/CFRs are probably going to sound better than anything but also perform horribly. Any tuner whos tuned CFRs will tell you to sprint in the other direction.
 
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