>>1157261> Shimano doesn't recommend any sort of quick link for dura acei thought the same the exact same thing. i had a dura-ace chain / saint 44 single ring / xt cassette on my high end mountain bike i built 10 years ago. I just could not stomach putting a cheap link on such a good chain. In the end my shop friend pushed me to and it was perfectly fine and ill tell you what - being able to quickly and easily break my chain means i just leave it in a jar of kerosene overnight and it gets cleaned much more completely , more regularly, and the fresh lube is more effective which has conclusively extended the life of my chain IMHO
quick link: easier maintence: longer life
[pictured] 10 years on 2 chains. big wet few weeks, needs a clean ? no problem