The SRAM EX1 drivetrain was created for the demands of electric-assist mountain bikes: a wide gear range with bigger jumps between gears, and sturdy components for heavy-duty E-MTB use. The EX1 chain is designed specifically for use with the 8-speed EX1 drivetrain. The robust design is capable of handling the high torque loads of E-MTB, while also running quietly across the gear range.

• The SRAM EX1 drivetrain was created for the demands of electric-assist mountain bikes: a wide gear range with bigger jumps between gears, and sturdy components for heavy-duty E-MTB use. The EX1 chain is designed specifically for use with the 8-speed EX1 drivetrain. The robust design is capable of handling the high torque loads of E-MTB, while also running quietly across the gear range.
• The PC-EX1 chain was designed and tested specifically for use with the EX1 8-speed drivetrain only
• Wider and stronger than conventional MTB chains, designed for the high-torque and heavy-duty use of E-MTB
• Chain features a 10-speed spacing, and utilizes a 10-speed PowerLock
• Not designed for use with other 10-speed drivetrains