ABSOLUTEBLACK OVAL DIRECT RF-CINCH 30T SHIMANO 12s BLACKOnly compatible with CN M9100, 8100 & 7100 Hyperglide+ 12spd chain due to different thickness and shape of the teeth Spaced for Boost specific bikes and fat bikes (when reversed) Oval chainring for use with RaceFace Cinch system cranks Compatible with RaceFace Next SL, SIXC, and Turbine cinch cranks Oval chainrings have been shown to improve traction and reduce leg fatigue For use with Shimano HG chains only 11 percent ovality 50mm chainline 7075
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ABSOLUTEBLACK OVAL DIRECT RF-CINCH 30T SHIMANO 12s BLACK