Convert your rear Xtracycle FreeRadical Cargo Kits brakes from a 26" wheel circumference to a 700c wheel. The Xtracycle break post adapter is easy to install and works great to move rim brakes further up the seat stay to accommodate 700c wheels.
Xtracycle offers a 1yr warranty on parts and components.
Xtracycle Stoker Bar Kit
Xtracycle Mini MagicCarpet