From the MotoWheels website:

Early Ducatis (before 99) have a large hollow 10mm pivot bolt and original black or anthracite adjustable levers. All "coffin style" master cylinders use the large hollow pivot.

Most newer bikes (after 1999) have the small solid 8mm pivot bolt with a flat screwdriver head on the top and silver adjustable levers. Some late model Monsters use the large Hollow pivot. Please select the correct lever on the options list.


It may be something to look into. I am not familiar with your model.