This is FEATHERWIGHT- and has drilling holes for every kind of rag joint and six inner "disk brake" You can bolt it to a large flange flip/flop and save almost ALLL the weight of a steel kit sprocket and rag joint- and even use titanium bolts!
I can barely tell the difference on my 66, but as when I switched to the 36, the motor revs a little less at the same speeds with this 34- for flat Florida, there's no problems. I'm easily cruising at 30, and that's on a speedo.
That 36 above still will take shipping costs- this is shipped for under $30.