SRAM PC-XX1 12Spd Hollowpin Rainbow Chain w27 Lightweight Boa® IP1 dial closure

Lightweight Boa® IP1 dial closure for on-the-fly micro-adjustment

Features Nine fixed vents for consistent airflow

STRAPS/BUCKLES: Hammockstrap 2

classic bib style

SRAM PC-XX1 12Spd Hollowpin Rainbow Chain w27 Lightweight Boa® IP1 dial closureThe strongest system is a chain with no weak links. Eagle chain links have a smooth radius, with no sharp edges or chamfers, which yield a significant reduction in noise, friction and wear. This design also allows for a flatter plate, which means more consistent chain riveting and greater overall strength. And its also the biggest contributor to the ultra smooth, precise, durable and quiet performance found in the 10 50 tooth cassette and X SYNC 2