Hello,
I have to take issue with the xc,s having red sliders,well they may have had ,but mine are xc,s and are sid blue in colour .
On the oustside of each slider there is a sticker which reads XC C3 Dual Adjust.
For general info the XL triple clamp was available in red,black and blue.
Hope this helps ...read,stir up the discussion.
cheers
Cameron