Bosch BDU3XX Lockring for Spider / Chainring – 1270016489

The Bosch BDU3XX lockring is an original Bosch spare part used to secure the spider or chainring on Bosch eBike Gen3 drive units.

This part corresponds to Bosch reference 1270.016.489 / 1270016489 and is used on Bosch BDU3XX motors, commonly found on Active Line, Active Line Plus and Performance Line systems. It is required when replacing or reinstalling the chainring, spider or drivetrain assembly on the motor.

Main features

• Original Bosch spare part
• Bosch reference: 1270.016.489 / 1270016489
• Type: locking nut / lockring
• Use: spider or chainring fixing
• Main compatibility: Bosch BDU3XX
• Colour: black
• Contents: 1 unit
• EAN: 4054289000417

Compatibility

Compatible with Bosch eBike motors:

• Active Line BDU3XX
• Active Line Plus BDU3XX
• Performance Line BDU3XX

Some suppliers also list this part for BDU33YY / Smart System, but before fitting it to Smart System motors we recommend checking the exact reference of the original part or contacting us for compatibility confirmation.

Important

This product includes only the locking nut / lockring. The required O-ring is not included and must be ordered separately if needed.

For correct installation, we recommend using the proper Bosch-compatible tool and following the correct Bosch assembly procedure.