SRAM X0 Eagle T-Type / Flattop 12 Speed Bike Chain - 126 LinkSRAM X0 Eagle T Type Flattop 12 Speed Bike Chain 126 Link The X0 Eagle Transmission Flattop chain is the strongest chain that SRAM has on the market to date and was specially developed for the Eagle Transmission abrasion. The flat top design of the chain not only maximizes shifting performance and stability, but is also a visual highlight on every bike. Chemical nickel plating of the links with subsequent PVD coating protects against corrosion and