The EX1 drive train was designed specifically for the demands of electric-assist mountain bikes: a wide gear range with bigger jumps between gears and sturdy components to handle higher torque loads. Liberal use of features found on SRAM's high end MTB parts provide high value quiet operation and ease of service.

X-Sync (wide-narrow) tooth profiles for great chain management

Compatible with Bosch mid-drive E-bike systems

Chainring BCD	Direct Mount Bosch
Color	Black
Defined Color	Black
Designed for ebike	Yes
Direct Mount Type	Direct Mount Bosch Gen 2
Drivetrain Speeds	11
Material	Steel
Ring Position/Type	Chain Retaining Single Ring
Tooth Count	18