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The Ethirteen Espec Plus represents a pinnacle of e-bike drivetrain engineering, purpose-built for Bosch motor systems. This aluminum crankset combines lightweight construction with exceptional durability, delivering reliable power transfer through demanding terrain. The 165mm crank arm length provides optimal leverage and pedaling efficiency for riders seeking responsive acceleration and smooth cadence control. Engineered specifically for Bosch compatibility, it integrates seamlessly with your e-bike's motor system, ensuring precise synchronization and longevity. The robust aluminum construction resists corrosion whilst maintaining minimal rotational mass, critical for e-bike performance. Whether tackling steep climbs or technical descents, this crankset offers the mechanical precision and reliability that serious e-bike riders demand.