Somewhat awkwardly, the cassettes need the same Eagle 12-speed chain as SRAM’s MTB Eagle groupsets, rather than the slightly-wider Flattop 12-speed road chain. The cassettes also have the same ...

There aren’t too many flattop chain options. Honestly, I think SRAM is the only one (YBN makes one) with the pure flat top edition, which they developed for their 12-speed road groups.

SRAM has set out its pitch and forsaken the front derailleur for evermore with the launch of its new 12 speed, 10-50t XX1 and ... especially when in the more extreme chain angles.

An Eagle cassette’s huge 50t cog overhangs the hub shell, and the spacing is wider. SRAM says you cannot use an Eagle chain on a RED AXS drivetrain. As to whether you can use a Campagnolo 12-speed ...