Redshift Battery Holder Di2 for ShockStop Seatpost

- This kit is for mounting your Di2 battery inside your ShockStop Endurance Seatpost or ShockStop PRO Endurance Seatpost securely
- If you have the ShockStop "PRO Race", you do NOT need this kit, because any Di2 seatpost adapter will work in the "PRO Race" version
- If you have the standard ShockStop "Endurance" or "PRO Endurance" post then this kit will work, but it is only compatible with the 27.2 mm diameter x 350 mm size