SRAM PC X1 11 Speed Chain, HollowPin 118 Link, with Powerlock.

The PC-X1 chain comes from a long line of dependable, lightweight chains that are built for toughness. Designed with SRAMs trusted XX1 geometry, the PC-X1 features solid pin construction, 11-speed PowerLock and smooth, efficient shifting that you can count on every time out.

CHPCX1