This lock cylinder and key set is compatible with the following electric bicycle models: BK3S, BK5, BK6S, BK6SL1, BK8, BK8S, and BK11.

For assistance with replacing the lock cylinder, please refer to the instructional video.

If you encounter any issues or need support, feel free to contact our customer service team at [email protected]. Please include the model of your electric bicycle and a photo of the battery lock cylinder for quicker resolution.