Tri-Di Creations — Universal Between-the-Arms Bottle Aero Cone

The Tri-Di Creations Universal Between-the-Arms (BTA) Bottle Aero Cone is a precision aerodynamic accessory designed for triathletes and performance-focused cyclists. Engineered to smooth airflow around a standard bottle positioned between your aerobars, this low-profile cone enhances aerodynamics while adding integrated storage for race-day nutrition. Lightweight, durable, and purpose-built for BTA hydration systems, the aero cone mounts behind a standard bottle cage using industry-standard 64 mm spacing. Each unit is designed and manufactured in Canada for clean integration, reliable performance, and race-ready functionality. Key Features Designed for between-the-arms (BTA) hydration systems Smooths airflow around a standard bottle to reduce drag Integrated internal gel storage cavity Universal 64 mm bottle cage mount pattern Lightweight and low-profile design Clean, minimalist cockpit integration Specifications Specification Metric Imperial Description Mounting Location Between Aerobars — BTA hydration setup Extension Length 64 mm 2.52 in Industry-standard bottle cage spacing Inner Diameter 81 mm 3.19 in Fits standard cycling bottles Length 100 mm 3.94 in Overall cone length Internal Storage Volume ~70 cm³ ~4.27 in³ Gel / small nutrition storage Bottle Compatibility Standard Cycling Bottles — Used with standard cages Installation Hardware Bottle cage bolts — Not included Installation Instructions Tools Required: 4 mm hex driver (or appropriate tool for your bottle cage bolts) Remove your existing bottle cage from the BTA mount. Position the aero cone behind the bottle cage. Align the 64 mm mounting holes with your BTA bracket. Reinstall the bottle cage over the cone using standard bottle cage bolts. Tighten securely to manufacturer-recommended torque for your cockpit system. Insert bottle and confirm secure fit before riding. Important Notes Bottle, bottle cage, and mounting hardware are NOT included Designed to be used in conjunction with most BTA hydration systems Ensure proper bolt torque per your cockpit manufacturer specifications Periodically inspect mounting hardware before riding Confirm bottle clearance and secure retention prior to racing