106 build
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1st Gear
Joined: Aug 2015
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From: Canada
106 build
Hey guys I have a 09 street glide with a s&s 106 big bore kit cams and head work looking for a good 2 into 1 exhaust I am thinking between thunderhead or d&d fat cat what would you Guys recommend with my set up I want performance over anything don't really care on looks I've heard the thunderheader has a really good tone ??
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Hey guys I have a 09 street glide with a s&s 106 big bore kit cams and head work looking for a good 2 into 1 exhaust I am thinking between thunderhead or d&d fat cat what would you Guys recommend with my set up I want performance over anything don't really care on looks I've heard the thunderheader has a really good tone ??
Scott
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Joined: Jun 2006
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From: san antonio
You left two of the better 2:1 systems off your list; V&H Propipe and D&D Fatcat. If you could find the early Propipe with the megaphone muffler, that would be better than the current version of the Propipe and, IMHO, will sound better. Your motor will respond to any of the four systems; you should be looking for photos of Streeglides with these systems mounted and hit YouTube for videos to hear the systems. Personally, I don't like the sound of a 2:1 system at cruise and prefer 2:2 systems that perform, like Bassani Pro Streets on a softail. However, duals look much better on a touring model and the replacement systems like Fullsac, Fuel Moto or V&H Power Duals will perform about as well as a 2:1 system, sound and look better.
Last edited by djl; May 10, 2016 at 03:50 PM.
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Joined: Jan 2008
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From: SoCal
I had an RB racing lsr 2-1 1.75" on my 08 FLHX. When I went 107" I stayed with it but there was something that was telling me there was alot left on the table. So I searched for 6 months. I settled on the D&D Boarzilla. Now before someone says "yeah but your 107" is a pretty hot build" , one of the guys that helped me decide is a tuner and he showed me 2 sheets of a mild 106" with the Fat Cat and the Boarzilla back to back. The BZ hit a tad earlier and made a touch more tq and hp than the FC on the sheets he showed me. Its not that I think that the BZ will make more felt power on your bike but judging by his sheets I don't think it will make less. When I had my bike re-tuned for the Boarzilla I picked up almost 10hp, didn't lose any tq and the tq came in earlier than with the RB. Oh and for another bonus, it is a touch quieter now. Also I see that most other stepped 2-1's(dragula,vh,bassani) have gone to the same dimensions as the Boarzilla which are 1.75"/1.875"/2". Good luck with whatever you choose.
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