The lock ring is essential for attaching the spider with the chainring to the motor. An additional O-ring 1270016119 is required. Compatibility includes:
- BDU4XX
- BDU37YY
- BDU31YY
- BDU38YY
- Product Number
- BDU38YY
- Bicycle Parts
- -
- Type
- -
- Material Construction
- -
- Wheel Size
- -
Important information
Specifications are collected from official manufacturer websites. Please verify the specifications before proceeding with your final purchase. If you notice any problem you can report it here.