SRAM XX1 Eagle Chain 12 Speed 126 Links Copper width-41cm and 6mm hex sizes fit

and 6mm hex sizes fit neatly into carrying case

Wheelset: Shimano WH-RS81 - 700c

Stan's NoTubes ZTR Alpha 400 Disc Aluminum 700c Rear Wheel

NC_2009 Giant Avail L Road

Selle San Marco Aspide GF NYC Saddle 129mm 7x9 Carbon Rails Black

SRAM XX1 Eagle Chain 12 Speed 126 Links Copper width-41cm and 6mm hex sizes fitIt might look normal from the outside, but the engineering inside this incredible chain design that makes possible a gear range previously found only in 2 chainring drivetrains. And 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, which yield a significant reduction in noise, friction and wear on chainrings