the early Version, 15/16, sleeved , shiny... was different from the current M bar 7/8, Bulged , matte ... though both are 1" in the center

for the Mk2 bars there is a connecting brace available .. others have made their own, using the extra crossbar to mount more E things ..


Pootling along at a modest pace puts very little stress on the bars , in my experience ..

old metal S-A triggers Did have a different end than common Derailleur cables's small barrel ends

havent torn the newer Plastic, much easier shifting one, down, myself..

S riser is longer above fork-headset to the bar clamp than the M . as well..
a bit more steel tube.. length.. IDK if tubewall thickness is different..