The Birzman Lockring Socket Ø43 mm is a precise specialty tool for the installation and removal of chainring lockrings on Bosch® Gen 3 e-bike drive systems. The tool is compatible with 8-notch lockrings Ø43 mm and ensures secure, material-friendly power transmission.
The robust, CNC-machined design made of alloyed steel guarantees high stability and long durability – ideal for workshops and professional service work on e-bikes.
Suitable for the following Bosch® drive systems:
Bosch® Gen 3
- Active Line
- Active Line Plus (from model year 2017)
Bosch® Gen 4
- Performance Line
- Performance Line CX
- Cargo Line
Features:
- Specialty tool for Bosch® Gen 3 and Gen 4 drive systems
- Fits 8-notch lockring Ø43 mm
- For installation and removal of chainring lockrings
- Precise fit for secure hold
- High-quality CNC-machined steel construction
Technical details:
- Drive: 1/2" square drive
- Material: CNC-machined alloyed steel