SRAM PC-X1 Chain - 11-Speed, 118 Links, Silver/Black insole They're made of bio-based material

They're made of bio-based material

and as you climb

John Henry was tough as nails and probably didn't give a rip about being comfy while he worked

during a longer period of time

SRAM PC-X1 Chain - 11-Speed, 118 Links, Silver/Black insole They're made of bio-based materialThe PC X1 chain comes from a long line of dependable, lightweight chains that are built for toughness. Designed with SRAM's 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. This X1 chain is an integral part of the SRAM 1x drivetrain system. NO COMPROMISES. Designed with SRAM's trusted XX1 geometry Solid pin construction PowerLock connecting link