If you’ve chosen to equip your bike with Campagnolo’s EPS drivetrain, the Non-Standard Battery Unit Holder allows you to mount the battery pack under the saddle or on the chainstay. Depending on where you decide to mount it, you’ll need either the EPS BB cable kit or EPS Seat Cable Kit. The Campagnolo EPS Non-Standard Power Unit Holder includes all the hardware needed to to mount the battery.