E*thirteen Helix R Guidering (3mm Offset) 3-Bolt 30t Gray

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- 3-bolt direct mount chainrings fit SRAM and other similar interface cranks- Tooth profile is compatible with both Shimano and SRAM chains in both 11 and 12 speed- Can be flipped to provide either a 52 or 55mm chainline