The Di2 electronic system has worked exactly as advertised. I have ridden on this for 6 months now and its worked flawlessly. I installed this myself, I am not an experienced bike mechanic -- but was able to do it fine including threading the internal cabling/wiring. It was just time consuming but I learned alot! Also EuroBike had the best price for this kit.

Great seller, product and shipping.
Highly recommended.

Super produkt all you need is included

Would buy from them again

This was my first purchase from EURO Bike Parts. My DI2 upgrade kit was on sale. The transom as smooth and shipping was very fast!

Highly recommend and versatile groupset when paired with Dura Ace crankset. The longer rear cage of the Ultegra' allows for an 11/32 cassette instead of the Dura Ace's 11/28.
Best of both worlds.

This was truly the easiest process ever

These Ultegra Di2 parts are the real deal. Internal battery and charger included upgrades the look of any bike.

Amazing product works very will.this by far is the best company to get di2 from. Super fast shipping.

I've purchased the Ui2 6770 & 6870 series from Eurobikeparts. Pricing is on par or better than most others and delivery was at no additional cost. Options for crank arm length, gearing and etc. are wide enough to satisfy most. The groups were in stock and shipped quickly. Will shop again at Eurobikeparts.

Couldn't be happier. Got exactly what was ordered, for significantly less than elsewhere on the Internet. Dom helped with several questions, prior to placing the order. The kit included everything required for a successful installation. Order arrived promptly, exactly as ordered./promised.

The di2 shifting is spot on, so smooth. I've got the sprinter buttons attached which is also a nice add on when you're racing in the drops.

Great price and great product and so much cheaper than Dura Ace for a very little weight penalty.

By far the smoothest gear changing i have ever experienced!

Got it for my DA mechanical parts. It works great and I saved a ton...

Less than dura ace and you get most of dura ace