Integrated Brackets Lightweight, simple and easy to adjust – the patent-pending bracket system simultaneously clamps the extensions while attaching the brackets to the wing. This design yields a smaller profile in the wind, creates less drag, and minimizes corrosion issues from exposed bolts. Wing UCI Compliant 3:1, aerodynamic full carbon fiber wing has zero drop from clamp to brake extensions. Combined with a shorter reach, this design translates to better control. Stackable Risers Slim, sleek risers fine-tune armrest/extension height to get a perfect blend of aerodynamics, power and comfort. UCI Compliant 3:1, aerodynamic full carbon fiber wing has zero drop from clamp to brake extensions. Combined with a shorter reach, this design translates to better control. - Slim, sleek risers fine-tune armrest/extension height to get a perfect blend of aerodynamics, power and comfort. A low profile ergonomic aerobar perfect for riders looking for a low stack but comfortable position on a TT or Tri bike. The “under bar” extension mount lowers your position 23mm lower than the T+ Carbon Series, making it the lowest you can go on any carbon model.     Bracket: - ZB System - Armrest: - F-19a Aluminum Armrest - Stack: - 37mm - Reach: - -90mm, -75mm, -60mm, -45mm - Extension Adjustment: - 215mm-290mm - Clamp Diameter: - Fits 31.8mm bars - Color: - Gloss UD Carbon Black or White - Weight: - 600g