Product Safety: ACID MTB Hybrid Pro Crank Arms: Selected 2025 Cube Models Updated 24th September

Product Safety: ACID MTB Hybrid Pro Crank Arms: Selected 2025 Cube Models

Cube has identified that the crank bolts on selected 2025 bikes may loosen over time. This is due to one or a combination of the following factors: 

  • The coating on some crank arm bolts is too thick in certain areas. This increases friction during tightening, causing the torque wrench to register before the correct torque has been reached.
  • The ISIS interface on some crank arms falls outside the specified tolerance limits.

You can read more on Cube's website HERE as well as view a list of models. This issue only affects bicycles from model year 2025, a receipt will show the bike code / article number starting with an 8, for example 802400M or 81260054.

We have already contacted customers whose bike may be affected by this issue via email.

All affected bikes must be inspected by a qualified Cube dealer or technician as soon as possible. If there is any looseness, unusual movement or noise, stop using the bike immediately and book an inspection.

You can book an appointment at your nearest Electric Bike Shop store HERE

Important Information: All affected bikes require crank bolt replacement.

  • Replacement bolts will be available from Week 34.
  • If the crank arm also needs replacement, we’ll handle this under the manufacturer’s warranty.

Update 24th September 2025

Good news – the replacement crank bolts have now arrived in our warehouse and are being shipped to our stores.

What you need to do:

Already booked in?

Please contact your local store, and they will confirm your updated booking date and time.

Not booked yet? ? Contact your local store to arrange a booking, click the link below for store contact details The Electric Bike Shop Stores

Can’t get to a store?

Please email us HERE or call us on 0117 452 6571 and our Customer Service Team will advise on the next steps or help coordinate with a local Cube dealer

More Info

If the crank bolt on your 2025 Cube electric bike has markings as shown below, it has already been checked and is not affected.

  • All affected bikes require crank bolt replacement.
  • If your crank arms also need replacing, we’ll handle this under the manufacturer’s warranty.

Please allow approximately 7–10 days for the claim to be processed and for any additional parts to be received.

Your safety is our top priority, if you have any concerns or questions please contact our Customer Support team HERE

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