RaceFace ERA Direct Mount Chainring - 34t DM CINCH For Shimano 12-Speed HG+ Compatible Chain BLK ModelNumber=G0395 The Tanpan 11 is compatible

The Tanpan 11 is compatible with 11-speed Shimano road shifters and optimized for eleven-speed Shimano mountain derailleurs (includes new Dura Ace 9100)

no bunching

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If using a 9-speed drivetrain use a 10-speed chain (shifts and works well on a 9-speed drivetrain and fits the ring tighter for better chain retention)

wide version for 55mm chainline

RaceFace ERA Direct Mount Chainring - 34t DM CINCH For Shimano 12-Speed HG+ Compatible Chain BLK ModelNumber=G0395 The Tanpan 11 is compatible52mm chainline for 148mm rear spacing Stainless steel teeth provide a 500% increase in wear durability over aluminum. Carbon fiber construction reduces ring weight while improving stiffness and power transfer Direct Mount (DM) fits Race Face Cinch system splined cranks Narrow wide teeth prevent chain drop, updated tooth profile runs quieter Installs with a common Park Tool BBT 22 Shimano 12sp (SHI12) and SRAM 11 12 Shimano 11 (NW) versions TECH SPECS