Speedfil Between-The-Arms (BTA) Bicycle Water Bottle Cage (Stem Mount, 621ml/710ml Bottles) | Bike Mounting Hardware| Triathlon Cycling Accessories

• HIGH PERFORMANCE HYDRATION ACCESSORIES – Speedfil hydration systems and accessories are designed to meet the demands of triathlon, Ironman & cycling competition. We continuously test and refine our products for both professional and amateur athletes. You can always expect the highest quality and performance from Speedfil.
• WIND-TUNNEL TESTED AERODYNAMICS – Our patented bicycle hydration systems & accessories are wind tunnel tested, to ensure they deliver the best in aerodynamics. We aim to help you and your bike go faster, and not hold you back.
• optimised FOR BTA AERO HYDRATION – The patent pending Speedfil Z4 Cage is the first cage optimised for BTA (Between-The-Arms) aero hydration. The Z4 Cage works with standard water bottles, as well as with the Speedfil A2 system.
• EASY MOUNT DIRECT TO AEROBAR – Features numerous ports for a direct Between-the-Arms BTA mount into the aerobar extensions with 4 nylon cable ties. No additional mount or hardware is required. The ports are strategically placed allowing for multiple positions and variable angles, accommodating most aerobars. Also compatible with our stem mount kit, for mounting directly to the stem.
• GARMIN COMPATIBLE – The Speedfil Z4 is compatible with the Garmin Quarter Turn Bike Mount (Part# 010-11430-00, sold separately through Garmin resellers) for between-the-arms BTA configurations. This saves space within the aerobars and provides easy access to your data.

The new patent pending Speedfil Z4 Cage is the first cage optimised for BTA (Between-The-Arms) aero hydration. The Z4 Cage works with standard water bottles, as well as the Speedfil A2.