Join Date: Apr 2010
Location: Ft Collins, Colorado
Mentioned: 0 Post(s)
This is a pretty old thread but I'll throw my 2 cents in anyway. I just installed the 2 bro's aluminum exhaust last week on an otherwise stock system. I am definitely pleased with it so far. It looks great - even though perhaps I would prefer the look of the CF slip-on I went with the cheapest option, and living on a gravel road I figure the aluminum may hold up a little better, or at least be cheaper to replace. Plus I didn't like the warning that you shouldn't use the CF or titanium slip-on on a dyno as they could burn through without cooling air, whereas the aluminum does not come with that warning. Anyway, I love how it sits on the bike, regardless of material choice. The sound is - impressive. It really is much louder, more so than I expected. It has a much deeper note to it while idling, and as it winds up it really starts to roar - I think I'm going to start wearing ear-plugs on longer rides. That does make me feel good about riding in traffic and all, but I felt a little bad starting it up this morning at 5:40 to go to work - sorry neighbors!
I wasn't expecting to notice any performance gain with just a slip-on, but I did notice a subtle improvement. It seems to wind up a little easier and on my hard accelerations I can feel the front end loft just a bit more than it used to. This seems to be borne out by the dyno charts on 2 bro's site, which show a negligeable increase in peak power, but the power does come on a little sooner. The charts are for a ninja, but still.
Installation was really easy. It took me about an hour all told, with a little help from my brother. The weight difference between the stock and the slip-on is considerable - 9 lbs 2 oz according to 2 bro's site - but feeling the difference tells the whole story. I found the mounting to be simple and easy to do, and it seems like a very sold mounting system. I haven't yet had any problems with the magnesium tip on the end coming loose, but I just installed it. I guess that's something I'll have to periodically check. Anyway, overall I'm very pleased. I think it's a nice starting point for further upgrades such as headers and a fuel management system. Did I mention it's really loud?