eThirteen e-spec Direct Mount aluminium chainring Bosch CX Gen4 noir

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  • Our new direct mount e*spec chainrings use our new M3 narrow-wide tooth profile, which reduces weight without sacrificing chain-retention. In making our SL and UL chainrings lighter and more beautiful than their predecessors, we adapted a similar design to work with Bosch, Brose, and Shimano motor configurations.

    • Capacity: 11 and 12-Speed Drivetrain Systems
    • Chain retention: Updated M3 narrow-wide tooth profile eliminates chain noise, and decreases overall system wear.
    • Chainline: 52mm or 53mm (Boost chainline)
    • Chainring: M3 narrow-wide tooth profile
    • Color: Black
    • Compatibility: Bosch, Brose, Shimano & Fazua
    • Features: Lightweight and durable design, minimal aesthetics, and updated M3 tooth profile.
    • Material: 7075 Aluminum
    • Mount: Direct Mount
    • Teeth: 34t, 36t, 38t
    • Weight: 34T: 117g, 36T: 148g, 38T: 174g
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