1989
Groups: Euclid is introduced in late 1988 for the 1989 model year and is joined later in the year by Centaur (which shares some of the Euclid parts)
1989 Euclid advertisement:
1992
Rims:: Stheno (Hardox or polish), Atek (Hardox), Mirox (Hardox) and Zark (Elextrox or Oxide) Groups: Record OR, Icarus and Centaur
June 1992 Bicycle Guide review of Record OR:
