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.
- Direct Mount Type: Direct Mount Bosch Gen 2
- Tooth Count: 18
- Drivetrain Speeds: 8 , 9 , 10 , 11
- Defined Color: Black
- Material: Steel
- Ring Position/Type: Chain Retaining Single Ring
User’s Manuals for Bosch Electric Bike Motor Systems