E*thirteen Helix Core Chainring

E-bike motors generate significantly higher torque than traditional drivetrains, which accelerates wear on softer aluminum rings. The 4040 steel construction of the Helix Core offers superior durability and resistance to deformation, ensuring your drivetrain lasts much longer under heavy load.

The Helix Core is designed for broad compatibility with major systems, specifically Bosch SX and Gen4 CX, TQ HPR50, and Shimano EP8 motors. Always verify your specific motor model and required chainline before purchasing to ensure a proper fit.

Yes, the Helix Core features an M4 narrow-wide tooth profile that is fully compatible with SRAM T-type chains. This ensures smooth shifting performance and reliable chain retention even on aggressive terrain.

Yes, the chainline is specific to the motor interface. It is set at 53/55mm for Bosch systems and 55mm for TQ and Shimano systems. Be sure to select the version that matches your motor's requirements to maintain optimal shifting and chain alignment.

Depending on the specific model and size, the Helix Core weighs between 94g and 189g. While slightly heavier than aluminum alternatives, the trade-off is significantly increased longevity and reliability for high-torque e-bike applications.