i was using shimano rsx dual-pivot calipers with generic CX levers (from IRO) and stock RSX pads... they worked fine, or so i thought

today i picked up Kool-Stop "Dura" holder & pad set... replaced the plastic RSX blocks with these things and almost threw myself over the bar on the first brake test; they arent even broken-in

these things allow endos on demand...something i wasnt previously able to do. ill give it a few weeks to test the wear and noise, but, so far so good