E*thirteen Helix Race Crank Arm

The shorter 155mm length is specifically designed to increase ground clearance. This significantly reduces the frequency of pedal strikes when navigating rocky, technical terrain or riding through deep ruts.

These cranks use a DUB spindle interface, so you must ensure your e-bike's bottom bracket and motor system are compatible with the DUB standard. Always verify your specific motor's crank interface requirements before purchasing.

The self-extracting bolt simplifies maintenance by allowing you to remove the crank arm using only an Allen key. As you unscrew the main bolt, it pushes against a secondary cap to pull the crank arm off the spindle, eliminating the need for a separate crank puller tool.

Yes, they are constructed from high-grade alloy and specifically engineered to handle the higher torque loads generated by e-bike motors. They prioritize stiffness and durability to ensure reliable power transfer under heavy use.

No, these cranks feature a standard 9/16-inch pedal thread, which is the industry standard for almost all mountain bike pedals. You can use your existing pedals without any adapters.