Originally Posted by
jnbrown
I have always used Shimano Dura Ace 9 speed chains and never had one break.
I don't carry a quick link or a chian tool but maybe I should.
Only ever broke two chains on rides and they were Dure Ace. And both went pretty quick- within 100 miles and within 500 miles. But that is what I got for fitting them to the mountain tandem used off road.
Luckily- I always carry a spare Run-in chain and chain breaker in the top bag.