I do not like their sound at all. I had one on a 929 that was in my garage for a while and my current Blackbird came with one and it sounds like crap. I was just lookng at replacement options last night but it will have to wait until Winter.
The low-slung pipe with Yoshimura can I had on my 919 was music in comparison. It really sounded great.
I for one like my D&D. But do not, for the love of motorcycles, buy the race packs. Street packs are plenty loud. As for HP gains, while not substantial like all aftermarkets slip-ons, people have gotten good results in par with the more expensive imported varieties. Made in the USA, even says so on the can. Did I mention they were loud?
The low-slung pipe with Yoshimura can I had on my 919 was music in comparison. It really sounded great.
Thats the set up I'm running now and I wanna bust a nut every time I spin it past 5k.... LOVE it.
The d and d's although made in a america, TX none the less and I like to support those boys if I can just aren't a quality product. The carbon fiber set I had started "unraveling" is the best way I can describe it, just flakin apart. Now they did have miles on em mind you but so does my Yosh pipe and it's just fine. I'll never buy another set ever.
A good quote, not mine but good.
"The sweetness of a good price wears away alot faster than the bitterness of a poor product"
Muffler packing does not last forever. All cans need to be repacked periodically, especially carbon and pseudo-carbon cans (like what D&D uses). The packing not only quiets things down, it also acts as an insolation against heat and more spesifically, sound waves. If you don't repack carbon cans when they need it, they will fall apart.
I have the Aluminum in satin black, put approximately 6,000 miles on them for a year and a half now. Been through rain, cold, sanded roads (no salt here in WA), and hours of sitting in the sun baking, with no signs of falling apart.
Sounds about the same in the first 1000 miles and now.
I've been rockin my yoshi can thats been needin to be repacked for a few years now and it's held together, just saying.
I like it just a touch louder thats why I haven't repacked it sounds just right but definily louder than it was fresh. But not obnoxious "ricerish" like these F'n civics with the loudness I can't stand those wet fart soundin shit boxes, and thats what the d and d reminds me of, personal preference I guess. that and they fell the hell apart.
Perhaps I should of qualified my statement by saying that my experience with Carbon Fiber mufflers is limited to testing aftermarket systems for the current crop of 450cc motocross bikes. It's semi-common to blow the packing out in the first moto and then destroy the carbon can in the second moto. The exhaust note of a 450 thumper is much more concussive than that of the 919 or most inline fours.
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