Cube E-bike Cranks ...
 

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Cube E-bike Cranks Issue

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Anyone recommend some E-bike cranks for a Bosch SX gen 4 motor? The Cube Acid NDS crank on my commute bike came off while riding last night.

I know there is a recall on these, so I torqued up the cheap bolts they use, but have still had an issue.

My local Cube dealer is saying 1-2 months for anything from Cube, but as this is my only independent way of getting to work, I need a quicker fix.

Writing this on the my phone while on the train to work, so grammar might be off. My 45min commute will be 2hrs door to door today!

Thanks

 
Posted : 04/09/2025 7:43 am
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Miranda are a decent price and come in a wide range of lengths


 

 
Posted : 04/09/2025 8:01 am
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Praxis ?

available from Upgrade - Upgradebikes

All the dealings I've had with Upgrade their customer service have been excellent (had a couple of Kinesis bikes).

Currently running Praxis (not ebike version) on a bike and they've been perfect. Not a single issue.

Or eThirteen. They seem to come oem on a lot of ebikes. Seen them on Bosch and Shimano powered bikes.

 
Posted : 04/09/2025 8:44 am
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Or eThirteen.

Junk. Well, the Shimano fit ones that came on my other half's bike were. Replaced with the cheapest of Shimano ones.

I'd look at getting silver Hope ones (if money no object).

 
Posted : 04/09/2025 9:43 am
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Pinnd do some don’t they? Their machining makes Hope look pretty amateur.

 
Posted : 04/09/2025 9:52 am
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Isis fitting or something like that on Bosch motor.

I got some cheap ones from Amazon for £40 because I wanted to try some 155mm instead of the 165s fitted 

 

 
Posted : 04/09/2025 10:01 am
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Affordable Trek ones look to be in stock here:

https://www.cooksoncycles.co.uk/product/63548162/trek-prowheel-isis-bosch-gen-2-4-crank-arms

 
Posted : 04/09/2025 10:23 am
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Pinnd do some don’t they? Their machining makes Hope look pretty amateur.

Hhmmm that's one way of looking at it, the other is that they look like they haven't done the final cuts yet

 
Posted : 04/09/2025 2:38 pm
 mboy
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What length do you need...? I have some spare 160mm Raceface arms to fit a Bosch motor...

 
Posted : 04/09/2025 10:25 pm
 mert
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Posted by: mashr

Pinnd do some don’t they? Their machining makes Hope look pretty amateur.

Hhmmm that's one way of looking at it, the other is that they look like they haven't done the final cuts yet

glad someone else said it too. The pinnd stuff looks like a massive collection of stress risers...

 

 
Posted : 05/09/2025 10:30 am
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Posted by: kelvin

Or eThirteen.

Junk. Well, the Shimano fit ones that came on my other half's bike were.

Yep, e13 cranks on my YT Capra and Tues were poor. 

 

 
Posted : 05/09/2025 6:46 pm

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