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Shimano BT-R1A External Di2 Battery - All Di2 components on the bicycle require the same firmware version. Using Di2 components with different firmware versions may cause malfunctions - Use Di2 system checker to update component firmware - Di2 External Battery, battery charger, and power cable are universal between Dura-Ace 9070, 7970, Ultegra 6870, 6770 and Alfine Di2 systems - Battery weight: 71 grams

Shimano's Di2 Battery Charger Cable plugs into the Battery Charger (shown, but sold separately) so you can keep your electronic drivetrain at full power.

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.

Shimano Front Derailleur Braze-On Adaptors allow you to run a braze-on style front derailleur on a frame that doesn't have a front derailleur braze-on mount. Multiple sizes cover fitment on most frames.

Brake lever blades are easy to bend or break, but their sacrifice saves the more expensive parts of your brake system, which is a good thing! Shimano Hydraulic Disc Brake Lever Blades can be used on either the left or right lever, and these are for XTR 9020 brakes.

- Replacement chain pins for Shimano 11-speed chains - Compatible with CN7900/7801 chains - 3 pins per pack

Shimano Di2 External Battery Mount - All Di2 components on the bicycle require the same firmware version. Using Di2 components with different firmware versions may cause malfunctions - Use Di2 system checker to update component firmware