E*thirteen Helix R Guidering(3mm Offset)3-Bolt 30t Bronze Labeled Size-20 x 1.95 Chainline 49mm (standard) and 52mm

Chainline 49mm (standard) and 52mm (Boost)

That enables you to use computer software during your training sessions

Included VersaMount clamps provide easy installation and flexible mounting options where braze-ons arent available

Tall knobs designed to penetrate and hold on loose terrain

}SRAM XX Ebike Crank Arm Set - 165mm ISIS Black

E*thirteen Helix R Guidering(3mm Offset)3-Bolt 30t Bronze Labeled Size-20 x 1.95 Chainline 49mm (standard) and 52mmE*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 3 Bolt DM 3mm Offset