e*thirteen e*spec Aluminum Direct Mount Chainring 38t for Brose S Mag, Black Supply

e*spec Direct Mount Chainrings use e*thirteen’s M3 narrow-wide tooth profile, which reduces weight without sacrificing chain-retention. These lightweight and well-designed chainrings are adapted to work with Brose S Mag eBike motor configurations.

• The M3 dual width tooth profile eliminates chain noise, and decreases overall system wear
• 53mm Boost chainline
• 7050 Aluminum
• 174g