Just as the rest of the Red 22 components have been precisely tuned for 11 speeds, the new PC-Red 22 chain was also engineered specifically for the new drivetrain. With the encouragement of cross chaining as part of the trim- and rub-free 'True 22' system by SRAM, the groupset's chain needed to be designed to handle the rigors of every imaginable gearing combination. The result is the PowerChain Red 22, pulling the best technology from its PC-1091R to create an entirely new, 11-speed chain. The first characteristic to note is that the chain's link pins are hollow -- these hollow, chrome hardened pins save 20 grams or so over a chain with solid pins. In addition to being lighter, they're plenty strong so you can expect the PC-Red 22 to have equal durability. It's quite similar to the PC-1091R, though SRAM reworked it to have even more chamfer on the outer plates, added a new inner plate finish, and made it narrower. It's made specifically for 11-speed drivetrains, and it mates perfectly with the tooth shaping and pickup/release points on SRAM's Red 22 cassettes and chainrings for flawless shifting performance. You can install a PC-Red 22 Chain without special tools thanks to SRAM's PowerLock silver connecting link. No other sub-6mm chain in the marketplace shares this feature. And unlike the occasional headaches we're all familiar with when it comes to Shimano HG pins and Wippermann connecting links, the PowerLock link is as strong or stronger than any other link on the chain, and it won't hinder shift quality in the least. The SRAM PC-Red 22 Chain is compatible with both SRAM and Shimano 11-speed drivetrains. Please note that while the PowerLock installation can be done tool-free, it's recommended to be used only once due to the extremely close tolerances required by the narrow 11-speed design. So if you must break your chain for maintenance reasons, a new 11-speed PowerLock link will be required to reassemble it. The Red 22 Chain comes packaged in SRAM's long...