So basically, most of the bikes and parts postings here should be pre-index.RULES FOR POSTINGPlease try to make posts about bikes and parts from the pre index era (pre 1986). While it was not the first indexing system, Shimano refined it to a simple, reliable, and easy to use system that sent them down the path of the modern shifting we use today. Shimano introduced Shimano Index System (SIS) in 1986. A place for pictures, articles, and discussion of bikes and parts pre 1986.
