Lock ring for mounting Bosch chain ring.
O-ring seal 1.270.014.024 additionally required.
Fits the Bosch Active Line, Performance Line, Performance Line CX electric bike systems.
User’s Manuals for Bosch Electric Bike Motor Systems
Bosch Performance Line User’s Manual
Bosch Performance Line Speed User’s Manual
Bosch Active Line BDU2XX User’s Manual
Bosch Active Line BDU3XX User’s Manual
Bosch Active Line Plus User’s Manual