Bought these as an upgrade that replaced the older version of my previous Ultegra brakes. Overall seem much better improvement and better stopping power than the older version. Also look better and almost looks the same as the dura ace but at a better price.
I purchased a used 2016 Roubaix that came with stock (Axis?) brakes and 105 components. Axis brakes worked except they kept reminding me about WWII and required super grip for steep drops. Since all my riding is either uphill or down (Big Island of Hawaii), I upgraded for that secure feeling that comes with Ultegra and a bargain price from BTD. They arrived on time, look great, and make going downhill almost a pleasure. They're not quite as nice as the disc brakes on my Sequoia, but they stop me when needed and look classy. From an old guy (69) trying to keep his heart beating on a budget. Enjoy