Not content with three 12-speed electronic drivetrain options, SRAM has launched Apex AXS, sitting below its Red AXS, Force AXS and Rival AXS groupsets. It’s one-by only (1x) and available in XPLR ...

It’s been one of worst-kept secrets in the world of mountain biking, but SRAM has finally announced its all-new 12-speed single ring mountain bike drivetrains, called XX1 Eagle and X01 Eagle.

Why are the rollers larger? Is it to get more “grip” on the 10-tooth cog? Ultimately, what matters to me is this (related to question 1): Is the roll-out/gear inches of a 12-speed SRAM the same as a ...