The J5 BTA bottle cage bracket is specifically designed to integrate with the J5 Bracket featured on T+ Carbon Aerobar System with the associated drillings. Building the BTA mount into the bracket system streamlines the cockpit providing enhanced performance while the bolt on mount stays secure on the roughest of roads. Moving the system away from extensions opens up hand positions & works with the shortest of extensions. With a 3 position cage mount & reversible offset base, the perfect position is easy to find. Compatible with standard bottle cages or Aero HC Hydration system.