E*thirteen Helix R Guidering(52/55 Flip Flop) 32t Intergal MFPN=00.4021.038.023 lightweight design with a slight

lightweight design with a slight convex profile

Tested and approved by leading carbon fiber component manufacturers

and Reverb remote assemblies

high-performance baselayer with great breathability and comfort

1 Volume Range 16-20L Laptop Storage Yes

E*thirteen Helix R Guidering(52/55 Flip Flop) 32t Intergal MFPN=00.4021.038.023 lightweight design with a slightE*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 Model Helix R Ring Type Single (Anti Chain Drop) Mount QuickConnect