| The bottom sections, fasten to the uppers with 5 or 6 screws along the join line.
The 2 lowers fasten along the bottom with 4 fasteners, 2 front and 2 back.
There's also a screw in each lower that secures to the rear brake pivot bolt on the rhs and a standoff on the lhs.
You can download the parts diagram off Ducati.com that will show you the exploded diagrams | 
Hybrid Mode
