OK, just found this old and most excellent post of Meanstrk's. Great picts showing all the bits, including the damper rod out of the cartridge. https://www.apriliaforum.com/forums/...highlight=fork

There's clearly no rubber bumper or top-out spring, just a metal stop. I don't see any reason why it wouldn't make a bit of a thud when you top out the forks with some speed.

Guess if it bugged me, a hard rubber bumper or a short stiff spring could be added