Join Date: Nov 2004
Location: Appleton WI
Bikes: Several, mostly not name brands.
Over the years Trek has recycled model numbers on very different bikes (I'm not sure why -- it's not as if there's a shortage of numbers available, after all). The original 900 series frames from the 1970s were racing geometry with a fastback seat cluster. In the early 80s, the racing geometry was retained, but the seat stays attached to the sides of the seat lugs rather than behind it. By the mid-80s, the fastback style was reintroduced using an investment cast seat lug. And by the 90s, the 900 series designated an off-road style bike.