SRAM XX1 Eagle XG-1299 12 Speed Cassette - XD Driver - Copper - 10-52T - 12 Speed Virtual Parent The Pro version also features

The Pro version also features a dual-density

28mm external width

Compatible with 14

Will improve performance with 10-42t 11-speed cassettes

VALT springs offer a significant weight reduction over standard steel springs

SRAM XX1 Eagle XG-1299 12 Speed Cassette - XD Driver - Copper - 10-52T - 12 Speed Virtual Parent The Pro version also featuresThe XX1 Eagle cassette is the ultimate choice for high performance race bikes and top end builds. Available in Gold, Rainbow, and a new Copper finish, these things certainly look great, but it's all the tech and fancy engineering beneath the surface that really makes these cassettes special. The cassettes are built around SRAM's X Dome architecture to create an incredibly lightweight and strong design with excellent mud clearing properties. X Glide 2