The TriRig Universal BTA Adapter Plate is a practical solution for riders looking to add a between-the-arms bottle mount to aerobars without built-in mounting bosses. Compatible with standard bottle cage spacing, it lets you install a single bottle cage or combine TriRig accessories to hold up to four bottles, creating a flexible and ergonomic hydration setup. Made from a 6mm billet of T6-6061 aluminum and finished with a hard-anodized coating, the Adapter Plate offers reliable strength and long-term durability. Its precise bolt spacing ensures seamless integration with most aero bar risers and standard cages, making installation straightforward and secure. Customize your hydration with the BTA Adapter Plate.