On the trail, the goal is to think about your shifting as little as possible. Trail Trigger shifters feature millimeter-perfect ergonomics to put the shift levers exactly where you want them, giving you quick thumb access without compromising your grip over rough terrain. Light lever action is paired with super positive indexing to make sure you never miss a shift. Compatible with microSHIFT ADVENT rear derailleur Internal cartridge bearings allow for light lever throw and positive actuation under load Silicon traction pad provides superior traction in all conditions Precise ergonomics put the shift lever where you want them Not compatible with Shimano or SRAM.