E*thirteen Helix Core e*spec Crank for Bosch/Brose/TQ - Black

Regular price £75.95
Tax included.


Helix Core e*spec | Crank | 155mm | BOSCH Gen4-Brose S Mag-TQ HPR50 | with Self Extractor | Black

Helix Core e*spec cranks deliver an e-bike drivetrain upgrade with high-end integrity and aesthetics at an extreme value. Engineered for e-MTB strength, so you don’t need to worry about pedal strikes or holding back on your next gravity run. Forged 6066-T6 aluminum crank arms keep you confident while the alloy self-extractor system keeps routine service tasks efficient. Added details like steel pedal washers and molded impact boots give this crank all the high-end features a rider hopes for.


  • Forged AL-6066-T6 durability and strength with light weight
  • Available in 24mm ISIS (21mm offset) for Bosch, Brose, TQ HPR50, Yamaha, and 30mm (18.5mm offset) for Fazua Ride 60
  • eMTB preferred shorter 155/160/165/170mm lengths options
  • Self-extracting crank bolts for ease of installation and service
  • Steel pedal washers & molded crank boots
  • An economic e-bike crankset upgrade with all the features and great looks you'd expect from higher priced models.


Arm Length 155mm
Spindle Interface Bosch/TQ/Brose
Offset 21mm Offset
Chainring Mount e*thirteen Direct Mount
Chainline 47mm Chainline
Q-Factor Bosch:172.7mm
Brose: 186mm
Material Forged AL 6066-T6
Weight 497g
Color Black
Warranty 5 Years



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