Best cranks for Cube Stereo Hybrid 144 Bosch Gen 5?

[kavillo]

which cranks are good for a cube hybrid stereo 144 with bosch gen5?

 

[Greg Watts]

which cranks are good for a cube hybrid stereo 144 with bosch gen5?

Welcome, @kavillo. Good news: the Bosch CX Gen 5 uses an ISIS spindle interface, same as Gen 4, so there's a healthy aftermarket for cranks.

The key variable is offset. 26mm offset cranks are optimised for Bosch CX Gen 4/Gen 5 motor frames, giving the necessary chainstay clearance. The two most popular aftermarket options worth looking at:

ethirteen Helix Core / Helix Race espec - available in 155mm, 160mm, 165mm, and 170mm lengths with the correct 26mm offset for your motor. Engineered specifically for eMTB strength, forged aluminium arms with self-extracting crank bolts for easy servicing.

Solid value option. Hope E-Bike Cranks - British-made, bombproof, as long as you spec the correct Q-factor variant for a Bosch motor, they'll fit regardless of which chainring brand you run.

Hope publish full clearance diagrams on their site, worth cross-checking for your specific Cube frame.

On length: given your bike is an eMTB, shorter is generally better. There's verified community data here confirming that 145mm cranks result in quicker motor engagement and significantly fewer pedal strikes compared to 155mm. Worth considering if you're on technical trails.

The stock cranks on your One44 are almost certainly 165mm, so dropping to 155mm is a meaningful upgrade, not just fiddling.