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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 from http://e-tubeproject.shimano.com/ Compatible with thinner, next generation electric SD300 wires and R9150 and R8150 series systems Features three SD300 wire ports Shared fixing method with BT-DN110 Built-in type U.S. spec Charger and power cable sold separately

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.

The Shimano SM-BTR2 is a rechargeable internal battery for use with Dura-Ace 9700 Di2 and Ultegra 6070 Di2* component systems. It's installed inside the seatpost, and accommodates a wide range of sizes thanks to the included slotted shims. It can be charged using the port on EW90-A/B cockpit junction box or SC-705 display unit, and requires the SM-BCR2 charger. The SM-BTR2 weighs 56 grams and charges in approximately 1.5 hours. Its charger (SM-BCR2), wiring kit, and frame mount are sold separately. *Requires a firmware update. You will need the SM-PCE1 PC Tool to install this update, which can be downloaded at http://e-tubeproject.shimano.com. Alternatively, the most recent firmware can be installed at your local Shimano Service Center. The product weight specified is an approximate weight based on the manufacturer's specifications (if available) or our measurement of one or two examples. For most products, the weight will typically vary by 5% to 10%.

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

The new Shimano Di2 EW-EC300 charging connector is designed specifically for Shimano's 12-speed Di2 road drivetrains. Connected via the rear derailleur, it is also compatible with Shimano power meters. Charging of the new series of 12-speed Di2 road drivetrains is now accomplished with the EC300 charger cord. Attached to the rear derailleur, this new cord is less expensive than previous chargers and is also compatible with Shimano power meters.

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

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

Shimano Rear Derailleur Pulley Assemblies

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.

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

Replacement Shimano ST-6800 STI Lever Hoods for worn or torn Ultegra Shifters.

Shimano Di2 STI lever hoods. - Fits Ultegra ST-6870 Di2 levers only

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.