
The KMC X10SL silver chain is packed with both technology and value. The 10 speed specific fits both SRAM and Shimano drivetrains and includes a tool-less connecting link. This top offering from KMC has of their unique features - X-Cuts on the outer plates for enhanced shifting, stretch proof inner and outer links, hollow pins with link cut-outs and bushing that offer noise reduction. If you compare this chain to other manufacturers, you will find that KMC really put some thought and effort in producing the X10SL CP(silver).
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Anonymous :
When the Ultegra 6701 chain that came on my Cervelo R3 wore out after 6 months, I replaced with the KMC X10SL. My reason for changing brands was that I prefer a chain with a master link to the Shimano pin system, but I've found that the KMC is a big improvement over the Shimano in shifting.
The Ultegra shifted fine to larger cogs, but, despite repeated adjustments, was finicky about shifting to smaller cogs, occasionally hanging. The KMC shifts very positively both ways, hasn't required adjustments, and works better with my Rotor crank. I dropped the Ultegra off the Rotor a few times; I haven't had that problem with the KMC.
Finally, the Ultegra was unidirectional; you don't have to deal with that with the KMC. The KMC is a little lighter too.
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