The evolution of Srams X01 group bears the epithet Eagle, to German eagle. If you look at the details of the group, this name makes perfect sense. While one often had to compromise with the 11-speed cassette with 10-42 teeth grading of the XX1 cassette and missed either the fastest or the slowest gear, one is with the 12-speed X01 Eagle cassette with its huge graduation of 10-50 teeth free in every terrain like an eagle. Sram manages to combine the advantages of 2-fold and 1-fold drives with the X01 Eagle: a translation ratio of 500%, which is on the level of 2-fold groups, in combination with the easier-to-handle and lighter 1-fold Drive.
The PC 1290 12-speed chain makes a huge contribution to the smoothness and smooth running of the new X01 Eagle 12-speed . This is achieved by particularly strongly rounded outer plates and the consistent avoidance of sharp edges. The HollowPin construction allows for smooth, precise shifting and weight savings without compromising on strength. The pins are reinforced by a chrome coating. A nickel coating provides high corrosion protection and reduces chain friction. The redesigned PowerLock chain lock has a longer life and is even easier to handle.