E*thirteen's new direct mount e*spec chainrings use our new M3 narrow-wide tooth profile, which reduces weight without sacrificing chain-retention.
In making the SL and UL chainrings lighter and more beautiful than their predecessors, they adapted a similar design to work with Bosch, Brose, and Shimano motor configurations.
Updated M3 narrow-wide tooth profile eliminates chain noise, and decreases overall system wear.
Lightweight and durable design,
Updated M3 tooth profile.
|Capacity||11 and 12-Speed Drivetrain Systems|
|Chainline||52mm or 53mm (Boost chainline)|
|Profile||M3 narrow-wide tooth profile|
|Compatibility||Bosch, Brose, Shimano & Fazua|
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