O-ring for securing the spider/chainring when the lockring is loose. Compatible with Perform. Line Speed (BDU4XX), Perf/Cargo/CX/S peed (BDU4XX), BDU37YY, BDU31YY, BDU38YY for Bosch The Smart System and eBike System 2.
O-ring for securing the spider/chainring when the lockring is loose. Compatible with Perform. Line Speed (BDU4XX), Perf/Cargo/CX/S peed (BDU4XX), BDU37YY, BDU31YY, BDU38YY for Bosch The Smart System and eBike System 2.
