Sitting just under the PC1091R, the non "R" version of the 1091 is still a 10speed chain but differs slightly to the R with only hollow pins. The 1091 still offers nickel plating on both the inner and outer links as well as the heavily chamfered side plates for smoother shifting and quiet operation. Comes with a PowerLock installation link which is totally tool free.
Recommended for all SRAM 10speed drivetrains.