E*thirteen Ultralight Guidering (5mm Boost) 40t - Black

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Direct Mount chainring for XCX, TRS, and LG1 cranks

Updated M3 narrow-wide tooth profile eliminates chain noise, and decreases overall system wear while retaining chain

10/11/12 speed. Compatible with both Shimano and SRAM 12 speed drivetrains

Provides Boost 148mm chainline on XCX Mountain cranks and 142mm chainlines on XCX Gravel cranks

Provides chainline for Superboost spacing on TRS and LG1 cranks