Joined: Jan 2008
Posts: 23,645
Likes: 1,109
From: Mans of NC & SW UT Desert
Bikes: 86 Katakura Silk, 87 Prologue X2, 88 Cimarron LE, 1975 Sekai 4000 Professional, 73 Paramount, plus more
+1 3 digits are steel, four digits aluminum. And then they mucked it all up by recycling the same model numbers, for example, the 720 started as a top of the line touring bike in the 1980s, then reappeared in the 1990s as a basic hybrid.