Frames are quite silmilar, but 1100 weighs more, has more bracing, does not have removable shock mount, has sidestand mounts in different place, has holes for lower fairing bolts in different place etc. I can't confirm whether there are any important measurement differences between the frames or not. But 1100 has longer forks and longer swingarm. Braced and banana arms have different linkage setup, so if you plan a swap, you need to swap the linkages as well. Having both 1100 and 750 banana swin