Originally Posted by
ironwood
I have a diamond frame Bstone 400 which is just one step up from the 300. The frame as I found it, had down tube Suntour shifters which worked perfectly, but I changed them to suntour bar ends which work the same as the down tube shifters, but of course are on the bar ends.
Does your 400 frame have braze-on downtube shifter bosses or did it come with clamp-on shifters? The '85's like mine had to use clamp-on shifters but in '86 Bridgestone added factory braze-on shifter bosses.