76 kz 900 swingarm swap

trying to find out what swingarms are compatablewith my 76 900. looking to go single shock

Any arm where the wheel is centered in the arm should work. Getting the geometry for the shock mount is the tricky part but it can be done. I would use an arm off of a bigger bike due to the engineering involved for a heavier bike. I wouldn't use an arm off of a modern 500 for an old 900.

Early GSXR arms work well, as do late model GSXR1000 and Hyabusa. Below is my 77' KZ1000 with an 87 GSXR750 swingarm. Although I went with the dual shocks, I could have kept the single shock setup.

It's about 3 inches longer and fits right in between the frame with no mods. You'll need to have a machinist make you some inserts to press into the GSXR inner bearing sleeves to reduce them to fit the stock pivot bolt. Axle diameter is the same but you'll need a longer bolt, either the Gixxer one of call your machinist again like I did.

Off course you'll need a longer chain and you have to deal with the rear brake (I modded the gixer one....but don't go there!!).

I run a 150 rear tire on a WM6 (3in) rim and it works great.