1 of 3 Shimano Ultegra R8170 12s Di2 Hydraulic Disc Electronic Group Reviews for the product - Shimano Ultegra R8170 12s Di2 Hydraulic Disc Electronic Group - Back to product 3 Product Reviews - Average rating 5 / 5 (Best Rated | Worst Rated | Most Recent | Oldest)Click to review this product 8170 groupMatt Johnson - 03rd February 2023Sleek design and smooth shifting. Loving it. Also, EuroBikeParts shipped group day after I purchased it and I got it in 3 days in Florida ready for weekend project. Great upgrade from ultegra mechanicalNick M - 06th October 2022Set up is super simple compared to 11s, parts look amazing and shifting is precise. I couldn't be happier. Excellent product and serviceJuan Rodriguez - 05th July 2022THis product in amazin y high quality. Very easy to install. The service in the store also very helpfull.Click to review this product Related Products Shimano Dura Ace R9270 12s Di2 Hydraulic Disc Group List Price: $4,499.95You save $1,600.00Price$2,899.95