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Shimano's Dura-Ace Di2 takes shifting to the next level. The Rear Wiring Kit connects to both the left and right shifters and Junction Box A (which displays battery power and allows manual adjusting). It also includes a battery mount, cable covers to route and hide the cables and a wire plug/unplug tool. The External Kit is meant to be run on the outside of the frame.

Shimano's Di2 electric drivetrain takes shifting to the next level. Two Di2 Battery Chargers are available. Choose the model designed for your system's battery. An additional power cable is required for the external-style battery charger (sold separately). These chargers fully charge the battery in 90 minutes.

SHIMANO - Junction A - E-TUBE - Under Stem Mount - 3-Port SHIMANO's SM-EW90-A 3-port Junction A mounts neatly to the bike stem and connects with E-TUBE wires from DI2 shifters and the downtube junction wire. The SM-EW90 junction box features an integrated battery level indicator, charging port, and gear index setup switch.

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

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.

Get that nice derailleur shifting smoothly and operating silently again with a Shimano Rear Derailleur Pulley Set. - OEM pulley set for Dura-Ace R9100 - Sealed bearing guide & tension pulley - Guide pulley with extra long teeth for increased chain control

Get that nice derailleur shifting smoothly and operating silently again with a Shimano Rear Derailleur Pulley Set. - OEM pulley set for XTR RD-M9000 - Sealed bearing guide & tension pulley - Guide pulley with extra long teeth for increased chain control

Frame Junction Box connects via SD50 E-tube wires to four different points: front derailleur, rear derailleur, cockpit junction box and battery mount. All Di2 components require the same firmware version. Using Di2 components with different firmware versions may cause malfunctions. Shimano Di2 Junction Box Junction Box UPC: 689228827462

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 Di2 STI Lever Hoods to make your bike feel new again. - Fits Dura-Ace ST-9150 Di2 levers

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 Di2 STI Lever Hoods to make your bike feel new again. - Fits Dura-Ace R9170 Di2 levers

Shimano Rear Derailleur Pulley Assemblies

This is a rear derailleur mount link for Shimano's XTR M9100 rear derailleur. A straight link is essential to optimal shifting performance and reliability.

This is a rear derailleur mount link for Shimano's XTR M9000 rear derailleur. A straight link is essential to optimal shifting performance and reliability.

Shimano Rear Derailleur Pulley Assemblies

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 ST-R9100 levers

Sealed bearing for Tension pulley Ceramic bushing for guide pulley COMPATIBLE MODELclose RD-6770-A, RD-6770-SS, RD-6700-A, RD-6600, RD-M772-GS, RD-M772-SGS, RD-M771-GS, RD-M771-SGS, RD-M770, RD-M810-A, RD-M810, RD-T780-SGS COMPATIBLE SERIESclose ULTEGRA 6770 Series, ULTEGRA 6700 Series, ULTEGRA 6600 Series, DEORE XT M770 Series, SAINT M810 Series, DEORE XT T780 Series

QUICK-LINK FEATURE - Tool-free assembly (possible) - Non-reusable - TL-CN10 BENEFIT - Easy connect - Compatible with current 11-speed chains - Quick assembly tool

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.

- Wears and functions like other links on the chain - SIL-TEC surface treatment - Tool free installation possible - TL-CN10 is available as SM-CN900-11 - Single use

Shimano STI lever hoods. - Fits Ultegra ST-6700 levers only

Shimano Deore XT RD-M786-GS Rear Derailleur Outer Cage Plate - "B" fit for SLX RD-M675-GS, Deore RD-M615-GS - OEM outer cage plate for XT RD-M786-GS

Shimanno Deore XT RD-M786-SGS Rear Derailleur Outer Cage Plate - "B" fit for SLX RD-M675-SGS, Deore RD-M615-SGS - OEM outer cage plate for XT RD-M786-SGS

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.

Shimano XT RD-M786-GS Rear Derailleur Inner Cage Plate - "B" fit for XTR RD-M986-GS, Deore RD-M615-GS, RD-M610-GS - OEM inner cage plate for XT RD-M786-GS, SLX RD-M675-GS