The SRAM X0 Eagle Transmission 12-Speed Chain has been specifically designed for the SRAM Eagle Transmission drivetrain and also happens to be the strongest chain SRAM has ever made thanks to its unique flat top design. This flat-top design not only lets us spend less time on maintenance and more time riding, it also shifts super smoothly no matter what terrain we find ourselves in. The X0-specific Dark Polar finish not only looks cool, it has been plated with electroless nickel and a PVD coating, so our chain lasts longer and doesn't rust after a trip through the creek.