Originally Posted by
icemilkcoffee
It's a good looking groupset and a great looking bike. Did the 7 speed SIS index with your 6 speed hub?
It was original equipment on the bike. So,
AFAIK it was always just a 2 x 6 downtube SIS set up. I think this may be an example of the very first time RX100 appeared on a bike. I sold that particular bike last summer when the vintage market was pretty soft. (Probably could get $2X for it now........... dang!).