The Shimano Dura-Ace Di2 SW-7971 Bar End Shifter is made from engineering grade plastic with two buttons on each stub end. It attaches to the ends of your aerobars via an expander bolt that is identical to expander bolts on mechanical Shimano Dura-Ace bar end shifters. Put 'em in, use an Allen key to expand the bolts, run the wires, and go. As good as it is for time-trialing, we see a great opportunities for roadies who hate having a separate time trial rig. Here, you can have your normal Di2 levers AND have your time trial setup. Just bolt on the bars, plug in the wires, and go.
While they do come set as a "right" or "left" shifter at the factory, there really is no fixed right or left shifter. Just as with the electronic dual control time trial levers, you can run these so the buttons are on the inside or the outside, you can also set which button is the upshift and which is the downshift, provided you have Shimano's Di2 diagnostic tool, SM-EC79. As with the electronic dual control time trial levers, these have a fairly light touch, feeling a bit like mouse clicks. Each press of each button is shifting up or down one cog or chain ring.
These switches must be run with either Shimano's Dura-Ace Di2 Dual Control road or Dual Control time trial levers. They cannot be run on their own, nor can they be used with Ultegra Di2.
Need (or want!) to return a product? No problem! US returns can be made for free within 60 days of purchase for any reason as long as item is in the same condition as received. US customers will receive a return shipping label and will be refunded the full order amount once the item is received.
To file a return, simply login to your account and select your order to file for a return. We will get back to you with a generated shipping label free of charge and will refund the payment as soon as the item is returned to us in undamaged condition.
You can always contact us for any return question at cs@ejrecyclery.com.
Note: Items that were marked as-is/for parts and/or do not have the red EJR 60 Day free returns display are not eligible for returns.
Note about purchases from eBay: Purchases made from our eBay store have the same return policy, but you will need to file for returns made there directly on eBay.
European Union 14 day cooling off period Notwithstanding the above, if the merchandise is being shipped into the European Union, you have the right to cancel or return your order within 14 days, for any reason and without a justification. As above, your item must be in the same condition that you received it, unworn or unused, with tags, and in its original packaging. You’ll also need the receipt or proof of purchase.
