I bought the 104 mm Race Face Narrow Wide to keep my chain from popping off http://amzn.to/1AhfZ1F
I'm happy to say that it works great, almost magically. I didn't think a chainring could make that big of a difference, but it solved all my problems.
104mm 32t, black: http://amzn.to/1AhfZ1F
Also available in purple: http://amzn.to/1EiOZw5
Watch video Race Face Narrow Wide installation and test online, duration hours minute second in high quality that is uploaded to the channel Berm Peak 12 February 2015. Share the link to the video on social media so that your subscribers and friends will also watch this video. This video clip has been viewed 805,908 times and liked it 9 thousand visitors.