I don't have any of these yet but I hear nothing but good things about these Power Ratchet shifters
http://www.ebay.com/itm/VINTAGE-SUNT...item256a54b744
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“One morning you wake up, the girl is gone, the bikes are gone, all that's left behind is a pair of old tires and a tube of tubular glue, all squeezed out"
Sugar "Kane" Kowalczyk