Product Description
Updated G4 narrow-wide tooth profile improved retention, reduced chain noise, and decreased system wear. Flip-Flop - 52mm (Boost) and 55mm (Super Boost) Compatibility: e*thirteen Helix, TRS, LG1 and XCX Direct Mount cranks Material: Steel Chain retention: Updated G4 narrow-wide tooth profile improved retention, reduced chain noise, and decreased system wear. Minimal aesthetics, and updated G4 narrow wide-tooth profile.