Used by World Tour level riders, has won multiple stages of the Tour de France- 3D printed titanium derailleur hangers offer increased strength and stiffness for improved shifting performance versus conventional hangers- Up to 12x as stiff as the stock aluminum hanger and 2-10g lighter- Direct mount hangers replace the b-link on Shimano derailleurs (new XTR and XT group sets no longer come with a B-Link)- Frame saving fracture notch design allows the hanger to become sacrificial under the hardest of impacts- Designed for 12x1.0 thru axles only