The EPO was designed as the first carbon 29er all mountain hardtail with aggressive geo. We incorporated 16.3" chainstays, while still leaving room for proper clearances. That is the shortest we wanted to go to retain proper trail feel. The EPO comes in at 1250g, adding sliders would greatly impact the overall weight of our new bike. We posted the 27.5+ images to show that it has clearances to run this wheelsize, although we prefer the EPO with 29's as it was designed.