Sram PCX01 Eagle 12 Speed Chain SilverThe Sram PCX01 Eagle 12 Speed Chain uses engineering inside this design to make a possible a gear range previously found only in 2-chainring drivetrains. It's also the biggest contributor to the Eagle drivetrain's ultra-smooth, precise, durable, and quiet performance. The Eagle chain's links have a smooth radius with no sharp edges or chamfers. This yields a significant reduction in noise, friction, and wear on the chainrings and cassette. This design also allows for a flatter plate, which means more consistent chain riveting and greater overall strength. Hard Chrome technology extends the chain's optimal performance life as you train!710845788505