A2 + Z4+ = complete BTA (between-the-arms) solution.
The patented SpeedfilTM A2 system works with any Specialized thread compatible water bottle in both 21 fl oz. (621 ml) and 24 fl oz. (710 ml) sizes. The wind tunnel developed A2 is designed to be used with triathlon/TT aerobars. The A2 achieves its superior aerodynamics by it’s key location within the riders cockpit. The athlete’s arms shield the device, thus becoming invisible to the wind.
The Z4+ is specifically designed to be used in conjunction with the Speedfil A2. This package includes a non-slip strap that locks your A2 in place and prevents the system from rotating. Also included is a uniquely designed tube clip that secures the drink tube to the side of the bottle and completely out of the wind. This provides the rider with a greater aerodynamic advantage compared to other systems with a fixed mast.
Garmin® Integration. The Speedfil Z4 integrates a detachable arm which can hold a Garmin® Quarter Turn Bike Mount* to the top of the cage when used in a BTA configuration. This not only saves precious space within the aerobars but also provides easy access. Data is now where it should be – easily viewable and easily accessible.
*Garmin® Quarter Turn Bike Mount (Part# 010-11430-00) sold separately through Garmin resellers.