Mon-Sat 8am-5pm PT
Sign Up
Serving cyclists
since 2002
In Stock & Ready To Ship — XT/Ultegra RT-MT800 Disc Rotors
Shimano EW-RS910 Junction A for Internal Bar/Frame Mount Shimano EW-RS910 Junction A for Internal Bar/Frame Mount
Click Here for Larger Image

Shimano EW-RS910 Junction A for Internal Bar/Frame Mount

Mfg PartNum:IEWRS910
In Stock Now
Ships Free!
Earn $9.91 in VIP credit. Click to Learn More.
This color/size is not eligible for VIP points

Backorder: This item is currently out of stock but is available to purchase today as a backorder. The expected availability date shown above is our best estimate as to when it will be shipped to you, but this date is subject to change based on our receipt of this item from its vendor. Shipping in the continental US is free for all backorder items (for international orders, our customer service team will contact you when the item is available to ship). Your credit card will not be charged until your item ships (Paypal requires payment up front, but you can cancel for full refund). Anytime prior to shipment, your backorder can be cancelled by contacting our customer service team.

The Shimano EW-RS910 is a Junction-A box for Internal Bar or Frame mounts, connecting the various parts of the Shimano Di2 drivetrain. Mounting simply and easily to either a bar end or dedicated ports that some frame manufacturers are including in the frames, the EW-RS910 makes an easily accessible charging port and a clean aesthetic that makes any bike look like a streamlined race machine.

B-Stock - This product has one or more B-Stock units available. These units can be purchased at a discount (see option select). B-Stock units were returned from other customers and may have missing or damaged packaging materials. These units are otherwise as new. The full manufacturer warranty applies. Click Here for more information.

Mfg PartNum: IEWRS910 

Ordered by Most Relevant First
5 stars
4 stars
3 stars
2 stars
1 stars
Reviewed 9/14/2020
by John42
Cycling Enthusiast
Vancouver, WA
Value Rating
Overall Rating
Shimano Junction A complete Di2

Shimano EW-RS910 Junction A for Internal Bar/Frame Mount; Its a must have for the Di2 system. It fits in the handle bar or specific placement on bike (down tube). Engineering, I wish it was more user ergonomic; the button is 'stiff', and the door opens downward to 'charge' the proprietary Di2 system battery....however, you still need this to complete the system. Allows user to plug into PC update components, and charge battery.

Was this review useful to you? Yes/No
Thank you for your feedback.
Reviewed 11/29/2019
by Drzipgrip
Overall Rating
Cockpit is seamless

Get rid of the under the stem blemish from the older junction and tighten up the aesthetics !

Can modify most aluminum and carbon bars to accommodate the wiring easily .

Was this review useful to you? Yes/No
Thank you for your feedback.
Reviewed 2/15/2018
by jb
Competitive Racer
east coast usa
Value Rating
Overall Rating
1 of 1 customers found this review helpful.
Super way to clean up your bike

I wanted to clean up my front end and this did the trick. It should become the standard approach - more aero for sure.

It just works. I also upgraded to bluetooth at the same time...

Was this review useful to you? Yes/No
Thank you for your feedback.

We are committed to delivering outstanding value and service to our customers, every day.
Try us today to see why so many of our customers come back again and again.

*Orders received before 3:00PM Pacific time are shipped the same day (Mon-Fri). Orders over $50
are shipped free (USA only, excluding AK and HI). Some exceptions apply. See Shipping for details. 52


Want to save on all your Bike Tires Direct purchases? Sign up here for exclusive discount offers.

BikeTiresDirect on Facebook BikeTiresDirect on Instagram BikeTiresDirect on Strava
5741 NE 87th Ave (I-205 exit 23B) Portland, OR 97220 | 800-682-0570 | [email protected]