SRAM's X-Sync Road 1 chainring is the 107 BCD 4-bolt ring built for Force and Rival AXS cranksets running a 1x12 drivetrain. The tooth profile borrows from SRAM's Eagle mountain program — tall, square-edged teeth in a narrow-wide pattern that grabs the chain earlier than traditional triangular teeth and holds it under the kind of side loads a 1x setup sees when you're cross-chained on the ends of the cassette. Machined aluminum construction keeps weight in check while giving the ring enough stiffness to shed watts cleanly through the spider interface.

This is a direct replacement for the aluminum ring that ships on Force AXS and Rival AXS 1 cranksets, and it swaps in with a single tool once the crankarm is off. Available in 38, 40, 42, 44, and 46 tooth options, so you can adjust gearing to match your terrain without changing cranks or cassettes. If you're moving from a 2x setup to 1x, or dialing in a gravel-leaning road build, ring size is where you tune the top and bottom end.

One compatibility note worth calling out for mullet setups: a full road 1x12 drivetrain will shift best with SRAM's 12-speed Flattop chain, but if you've built a mullet with an Eagle mountain cassette out back, you'll need to run an Eagle 12-speed chain instead. The chainring itself works with either — the chain choice is driven by what's happening at the cassette. Mud-clearing recesses machined into the ring help shed grime that would otherwise get pushed up between the chain and teeth, which matters more on gravel and wet-weather rides than it does on dry tarmac.