What does SRAM’s XX1 11-speed Group Mean For the Future of Mountain Biking? Evan2012-05-29T12:56:05-08:00 Our expert mechanic and sometimes futurist Daniel Slusser offers his thoughts on What does SRAM’s XX1 11-speed Group Mean For the Future of Mountain Biking?Evan2012-05-29T12:56:05-08:00