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Did you notice the chain keeper on Boonen's Classics bike? Will they soon be as abundant as compact cranks? - TF
http://www.cyclingnews.com/photos/2006/apr06/roubaix06/index.php?id=boonen_time/IMG_9918
http://www.cyclingnews.com/photos/2006/apr06/roubaix06/index.php?id=boonen_time/IMG_9918