Designed for use with the Zipp SL Speed seatpost; an internal mount to hold a Shimano DI2 seatpost battery.
FEATURES:
- Mount compatible only with B1 SL Speed seatpost
- Weight: 18g for 27.2mm
Designed for use with the Zipp SL Speed seatpost; an internal mount to hold a Shimano DI2 seatpost battery.
FEATURES: