Race Face ERA Carbon DM Ring 943-00-033

- 52mm chainline for 148mm rear spacing \n- Stainless steel teeth provide a 500% increase in wear durability over aluminum. \n- Carbon fiber construction reduces ring weight while improving stiffness and power transfer\n- Direct Mount (DM) fits Race Face Cinch system splined cranks \n- Narrow-wide teeth prevent chain drop, updated tooth profile runs quieter \n- Installs with a common Park Tool BBT-22 \n- Shimano 12sp (SHI12) and SRAM 11-12 / Shimano 11 (NW) versions