Shimano 8170 Di2 Rh Sti W Bk Coupler & Receiver Locks Made to replace the sock Lube & Cleaner Made to replace the sock liner in roomy to moderate fitting athletic and outdoor footwear Crampon Cobra™ Toe Crampon Features The wireless connection provides a clean cockpit enhancing the aerodynamic effect and easy maintenance Wider pad clearance decreases brake noise Maintenance friendly bleeding process Unparalelled ergonomic features such as raised hood peaks on levers Brake control is optimized with light and smooth lever action Enhanced modulation thanks to an expanded braking control area Compatible with wireless or wired connection The Di2 platform untethers the shifters while delivering fast and reliable wireless shifting