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Unior Bosch Gen 2 Lock Ring Tool


Regular price$59.99

  • Free nationwide shipping on all orders over $149

Tools with verified quality
Unior Hand tools are in compliance with the European and global quality standards. Unior is striving to assure the high quality of hand tools also as a fully authorized CEO (European Tools Committee) member.
Unior was among the first manufacturers of hand tools in Europe to receive ISO 9001 quality certificate. In 1994, the company received ISO 9001 quality certificate for the development, production and marketing of hand tools, sheet metal housing for hand tools and mechanical processing of forging parts.
Unior tools are in compliance with DIN standard. Since 1991, the tools for working at high voltage also proudly hold VDE certificate, issued by VDE Institute- "Pruf und Zertifizierungsinstitut" from Offenbach in Germany.

Used for the motor mounting bolts on Bosch Gen4 e-bike drives. It’s important to use this Torx Plus T40 socket to prevent rounding of bolts that can happen when standard Torx profile is used.

Product Features:

  • Designed for the installation and removal of chainring lockrings on Bosch® Gen 2 e-bike motors.
  • Precision-engineered with CNC machined premium flex plus carbon steel for superior durability and performance.
  • Integrated 1/2" drive fitting ensures compatibility with our ratchet, fixed handle, and torque wrenches for convenient use.
  • Compatible with Bosch Active Line, Performance Line, and Performance Line CX from model year 2014 onwards, with a 50 mm lockring outer diameter.
  • This tool serves as a reliable replacement for the Bosch® 0275009003 tool.




Great experience with Paul. Had an issue with my Fox X2, and sorted me with one of his EXT shocks in the time while a new part came from the UK. Really transparent service, explaining in details the issues and solutions. Chur!

Max Penny
Queenstown, NZ.

"Proflow have been super important for me with bike setup. They're very professional and I love the fact they think outside the box to get the most out of suspension. I definitely couldn't have got my bike feeling the way it does without their help!"

George Brannigan
UCI Athlete.

Great service, on the spot repair. Highly recommend

Jade Power
Queenstown, NZ.

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