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This is the correct plug-and-play wire for Shimano's E-Tube Di2 electric-shifting systems. It comes in sixteen different lengths, so choose the one(s) that's right for your Di2 E-Tube wiring configuration.

If you put in a lot of miles and/or sweat a lot, your shifter hoods probably need freshening up. Grab a pair of Shimano Dura-Ace STI Lever Hoods to make your bike feel new again. - Fits Dura-Ace 9001 STI levers

This is a replacement for the stabilizer unit of your Shimano rear derailleur, also commonly called a roller clutch assembly. A functional stabilizer keeps chains locked onto single ring setups, and reduces chainslap, mis-shifts, and ghost shifting. - Fits XTR RD-M9000, XT RD-M8000, SLX RD-M7000-11