Tune Di2 Seatpost battery holder bike packing these are the real deal

these are the real deal

The extra knurling and the special compound rubber also helps to reduce vibrations

Very good shock absorbing properties

Oval 7mm x 9mm

2x cross rear lacing

Tune Di2 Seatpost battery holder bike packing these are the real dealEnergie Suitable for bikes with Shimano's electronic Di2 groupset, either MTB or road. A very tidy solution and light solution for mounting the internal battery cleanly and safely in the seatpost. It uses the similar sticky material found on the Tune Gum Gum headset expander, just by tightening the bolts compresses the silicone material pressing it outwards and gripping onto the inside of your seat post it's complete safe for light carbon posts. Easy