8-bolt direct mount compatibility only to new RED® and Force eTap AXS™ cranks. Not reverse compatible with prior 8-bolt cranks
SPECIFICATIONS Speeds: 12 Crank arm length: n/a BB Compatibility: n/a Chainring Size: 46/33, 48/35, 50/37 Bolt Circle Diameter (BCD): Direct Mount (DM) Chainline: n/a BB Spindle Interface: n/a Chainring material: Aluminum Guard: n/a Crank arm material: n/a Color (Crank arm): n/a Power Meter Type: Ant USB