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 SRAMâ€™s high end MTB parts provide high value, quiet operation and ease of service.
- Machined from case-hardened tool steel
- Cogs are designed to work specifically with inner and outer chain links for precise up- and down-shifts
- Big steps between cogs are suited for electric-assist riding, reducing double shifts and maximizing component life