Internal mounts for Di2 batteries, such as the Shimano SM-BTR2 or BT-DN110, can be secured inside the seatpost using a retention plug or holder like the MT-BINT-SP. Read more.
For a P-Series bike, maintaining aerodynamic efficiency is key. An internal mount or a low-profile external mount is recommended to avoid disrupting airflow around the seatpost.
Compatible with: P5 (2019 - present), P-Series (2020 - 2023)
