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Review title: These chains are unreliable and weak
Product review: I have a friend with whom I have been riding who has the Dura-Ace 10-sp chain. He has broken his chain THREE times with me (3 different NEW chains). Each time I had to bail him out with my chain breaker by taking out the failed link (never the connector link). This guy is not big (5'8", 155lbs and is by no means an "animal" for strength). These 10-speed chains are super-weak. I have never had a Dura-Ace 9-speed break (nor have I ever ridden with anyone who has ever had a 9-speed chain break). Stay away from the 10-speed chains. My "new" bike has a KMC SL 10-sp on it and it is working well. The manufacturers are in such a race to be the lightest that they will sacrifice everything to suck you in.
