There's nothing worse than the sickness and dread that comes when a stick whacks your derailleur hanger and you realize that you're about to embark on an eight mile hike back to the trailhead. And those uber stiff carbon soled shoes you bought last week Well, they're great for serious hammering while you're on the bike, but they're not ideal for a nice leisurely walk through the woods. Do yourself a favor and keep a Yeti Derailleur Hanger in your repair kit. In a matter of minutes you'll have the old mangled unit off the bike, and be ready to get back on the trail. Your friends will probably appreciate the respite from the arduous pace that you'd been keeping aboard your Yeti anyway. This Yeti Derailleur Hanger will fit on the ASR Carbon, the ASR5, the ASR5 Carbon, and the 2011 575. It comes with replacement fasteners.