E-Thirteen Helix Plus Direct Mount 10 to 12V Flip-Flop Black Chainring

New narrow width G4 tooth profile improves retention, reduces chain noise and decreases system wear.Flip-Flop – 52mm (Boost) and 55mm (Super Boost)Details Chain Line: Flip-Flop 52 and 55mm. Direct-Mount E-Thirteen. Material: 7075 aluminum. Tooth: 30, 32 and 34 teeth. Speeds: 10, 11 and 12 speed Shimano and Sram. Compatibility E-Thirteen : TRS/LG1 cranks and XCX direct mount cranks.