Description:

ethirteen Helix Core espec Alloy Crank | 160mm | 26mm Offset – Forged AL-6066-T6 for e-MTB strength, with self-extracting alloy crank bolts, protective crank boots, and shorter rider-preferred length to reduce pedal strikes. Optimized for Bosch CX Gen4/Gen5, also fits Brose.

Helix Core e*spec Alloy Crank – 160mm | 26mm Offset

Upgrade your e-MTB with the Helix Core e*spec Alloy Crank, built specifically for riders who demand durability, performance, and reliability on gravity trails. The 160mm length reduces pedal strikes, while the 26mm offset is optimized for Bosch CX Gen4/Gen5 frames but remains compatible with all ISIS spindle motor systems.

Constructed from forged AL-6066-T6 aluminum, the Helix Core provides the stiffness and strength you need without unnecessary weight. Featuring alloy self-extracting bolts for quick service, and protective pedal washers plus molded impact boots, this crank is built to last season after season.

✅ Key Features

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  Length: 160mm (shorter for reduced pedal strikes & better clearance)

  
  


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  Offset: 26mm (optimized for Bosch CX Gen4/Gen5, fits all ISIS spindle motors)

  
  


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  Material: Forged AL-6066-T6 aluminum arms

  
  


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  Weight: 497g (160mm, 24mm ISIS, Bosch/Brose)

  
  


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  Chainring Options: Compatible with Helix Race espec, Helix Core Steel, espec Plus rings, and 104BCD spiders (sold separately)

  
  


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  Protection: Includes pedal washers & impact boots

  
  


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  Color: Black

  
  


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  Compatibility: Bosch CX Gen4/Gen5, Brose S Mag