About this product
Bosch Lockring (BDU4XX, BDU37YY, BDU31YY)
Bosch lockring for mounting the spider with mounted chainring. The lockring ensures that the chainring is held firmly in place to prevent it from coming loose on its own. It is compatible with some Bosch Drive Units of the E-Bike System 2 and with the Smart System.
Note: O-ring also required (1270016119)
Compatibility - Bosch Lockring (EB112000JH)
Performance/ Cargo / CX / Speed Line (BDU37YY)
Performance Line SX (BDU31YY)
Performance/ Cargo / CX / Speed Line (BDU4XX)
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