The pro tharsis xc flat handlebar if you are serious about xc riding the tough yet super lightweight tharsis xc flat handlebar from pro is the bar for you uni directional t700 carbon construction results in a stiff strong and lightweight structure while the 318mm oversized stem clamp diameter further increases strength and rigidity pro tharsis xc flat handlebar features monocoque uni directional t700 carbon construction 318mm oversized stem clamp d