Birzman Lockring Socket Bosch 43mm (Gen3)

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