Zipp 2001

Although they have been out of production since 1997, they still have a cult following within triathlon, where they remain race-legal[1][citation needed] .

Other examples include Hotta, Softride, Trek's Y-foil, and the Cheetah Cat.

The Zipp 3001 (which was a 2001 with additional boron strips stiffening the carbon fiber) was released in 1997.

In 1998, the UCI announced that all non-double triangle frames would be illegal for road racing starting in January 2000.

Since January 2000, Zipps have not been legal for use in road racing, or UCI-organized time trials.