B-RAD bases are the foundation of the B-RAD system, as all other system accessories are mounted on them. They allow you to move water bottles to make room for frame bags, move them away from suspension shocks, and create space to mount additional bottles and/or bags on the same bottle cage mount. Repositioning is done using the bottle cage mounts already present on the frame. Lightweight, durable and rust-proof materials. Customize your storage space according to your specific needs with the flexible B-RAD system. The 2-slot base allows you to move a bottle or other accessory up to 54 mm to an optimal position even on smaller or dual-suspension frames