You can find all the replacement parts and components for your Bosch-powered e-bike at Escapa.
The Bosch Locking Ring (BDU4XX, BDU37YY, BDU31YY) is used to mount the crankset with the chainring installed
The Bosch Locking Ring (BDU4XX, BDU37YY, BDU31YY) is used to mount the chainstay with the chainring already installed. It secures the chainring in place and prevents it from moving.
Compatible with:
Performance / Cargo / CX / Speed Line (BDU37YY)
Performance Line SX (BDU31YY)
Performance/Cargo/CX/Speed Line (BDU4XX)
You must also install the
