Updated M4 narrow-wide tooth profile improved retention, reduced chain noise, and decreased system wear.
Flip-Flop - 52mm (Boost) and 55mm (Super Boost)
e*thirteen Helix, TRS, LG1 and XCX Direct Mount cranks 10/11/12 speed. Compatible with both Shimano™ and SRAM™ 12 speed drivetrains.
Minimal aesthetics, and updated M4 narrow wide-tooth profile.
AL-7075-T6 Aluminum Alloy
30t, 32t, 34t options
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