Tax included.

The new Extra Large ATTK top tube box allows you to fit even more of your preferred nutrition in a sleek package that tucks out of the wind behind the stem. ATTK XL is designed to improve aerodynamics while offering a streamlined storage solution. The uniquely designed shell allows cables to route straight through to the top tub.  Mounting is simple using top tube braze-ons on compatible bikes. 

Key Features

  • The ATTK XL offers easy access with flexible materials and extensive cutouts.  It offers a large carrying capacity in a sleek package.
  • Can be mounted with FPS straps or bolts.


  • Construction: Plastic and molded rubber
  • Capacity: 229.66cm3
  • Length: 305mm
  • Width: 42mm
  • Color: Black
  • Weight: 125g w/o bolts