EXAMINE THIS REPORT ON ROAD BIKES

-considering that complete rear end is rotatable and chainstay is wider than seat tube, can we rotate the rear end all of the way so that the bike FOLD in 50 % when pack for travel? It seems to be to get doable.Dura-Ace is basically geared toward racing bikes, creating Ultegra a far more versatile groupset. With A variety of chainring and cassette