Seat bolt pattern is only compatible to the old design of the flat plate seat post where the seat adjustment pin fit into the back of the seat post.
Comments about Bike Seat, Flat Plate Mounted:
Seat bolts don't fit the model. 5 inch centers instead of 4 and 3/4.
Comments about Bike Seat, Flat Plate Mounted:
It works fine just took a little modifying to install.