http://hopecyclery.blogspot.com/2013/03/xx1-competition-e-13-trs.html
BikeFan84 Monkey Oct 27, 2004 302 0 D-Ville Mar 5, 2013 #1 http://hopecyclery.blogspot.com/2013/03/xx1-competition-e-13-trs.html
Dogboy Turbo Monkey Apr 12, 2004 3,221 646 Durham, NC Mar 5, 2013 #2 Here too: http://wolftoothcomponents.com/
'size Turbo Monkey May 30, 2007 2,000 338 AZ Mar 5, 2013 #3 http://www.pinkbike.com/news/e13-Prototype-Chain-Rings-First-Look.html