The e*thirteen Helix Race 12-speed 9-50t cassette is an upgrade to any SRAM™ Eagle or Shimano™ drivetrain, and offers a 556% range. The 9 tooth cog lets you step down one chainring size while keeping the same top end gearing and provides not only better ground clearance, but an overall lighter drivetrain.
Works flawlessly with Shimano and SRAM drivetrains, including electronic shift systems
CNC optimized for light weight and wide range
Durable and serviceable, with replaceable gear clusters
Engineered with improved durability of 2 part steel and aluminum assembly
