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.

A look at SRAM's trailblazing 11-speed MTB drivetrain's creation We've already ridden SRAM's XX1 group and as you might imagine, there was a lot of engineering that went into creating this ...

It’s been almost five years since SRAM first introduced the 1×11 drivetrain, and the configuration has become so popular that many new bikes are foregoing front derailleur mounts and cabling options ...

SRAM took all of the technologies that have made the XX1 rear derailleur successful with single ring setups and applied them to a Force-level rear derailleur. This includes: The Type 2 Roller Bearing ...

We’ve been skeptical of 11 speeds on road bikes, mainly because the benefits are muddy. But on the dirt side, SRAM is making a compelling argument for 11 gears out back with it’s new XX1 drivetrain.