Cyclus Bosch E-Bike Sprocket Tool - Sprocket & Gear
Cyclus Bosch E-Bike Sprocket Tool - Sprocket & Gear

Cyclus Bosch Gen 3 + 4 E-Bike Drive Unit Lock Ring Tool

Regular price£51.50

🚚 FREE Standard UK Shipping on all orders over £20

Cyclus Tools Bosch compatible Locknut-Spider Removal Tool for assembling and disassembling of Bosch Active (Generation 3 +4) E-bike motor lock nuts. This tool is essential if you need to remove the spider or sprocket to gain access to the motor for routine maintenance.

Steel construction featuring thicker teeth than usual to ensure safe transfer of torque loads, this is a professional workshop quality tool.

This tool can be used with a 32mm wrench or 3/8" square head driver. You will also require a crank puller to remove the crankarm.

During tightening, pay attention to the Manufacturer's recommended torque settings.

The outer diameter of this tool measures 43mm.

Compatible with:

Active Line (BDU310)
Active Line Plus (BDU350)
Performance Line Cruise (BDU365)
Cargo Line Cruise (BDU450 CX)
Cargo Line Speed (BDU490 P)
Performance Line Speed (BDU490P)
Performance Line CX (BDU450 CX)

MPN: 720209

We ship fast! Our stock levels are updated live and most orders placed before 14:00hrs are shipped same-day (Monday to Friday).

Each product page will show estimated dispatch times.


  • Standard UK shipping is FREE on all orders over £20.
  • Express shipping options are available on checkout.
  • We also offer Click & Collect from our Warehouse Mon to Fri 9:00 to 5:00 - kindly wait until we confirm your order is ready before visiting.


  • Europe standard shipping is £3.99 with an Express option available.
  • We have had to disable shipping to the EU. We hope to be able to resume shipping to more EU destinations shortly.


  • We have had to suspend shipping outside of the UK. We hope to be able to resume shipping worldwide shortly.

We offer a no-quibble 30-days refund policy*. There's no need to contact us before returning your item(s). Simply send it back to the following address:

Sprocket and Gear (Returns), Kingfisher Works, Tag Lane, Hare Hatch, RG10 9SH, United Kingdom

Be sure to include your order number and reason for return. Sorry, but we can't cover, or contribute to, the cost of the return.

* To read our full returns/refund policy please click here.


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