ultimate wheel

plural ultimate wheels

1. cyclingA type of unicycle without a frame or seat, consisting of only two pedals attached to a wheel.

   Why ride an ultimate wheel? Well its obscure, its fun, and only a little more difficult than riding a unicycle.

   2021, David Bagley, “Making and Riding the Ultimate Wheel”, in SillyCycle.com

   2 more examples

   It is also interesting to note the number of different types and designs of cycles, including the so-called “ultimate wheel”—a wheel with pedal arms and pedals but no frame or saddle or handlebars.

   1973, Jack Wiley, The Unicycle Book

   There are three possibilities to prevent the ultimate wheel from tilting to one side, which is the greatest difficulty in riding the ultimate.

   2006, Anders-Wilkens, Andreas, Unicycling : First Steps, First Tricks