E*thirteen Helix R Chainring CR4HRA-123

- E*thirteen QuickConnect Direct Mount rings include 1mm spacers, which allows them to be run on legacy cranks (TRS/LG1/XCX), as well as Helix and Helix R cranks\n- 3-bolt direct mount chainrings fit SRAM and other similar interface cranks\n- Tooth profile is compatible with both Shimano and SRAM chains in both 11 and 12 speed\n- Can be flipped to provide either a 52 or 55mm chainline