I have a Ducati Performance lightweight flywheel. It weighs 26 ounces. It fits Ducati 1999 and newer 748, 916, 996, 998, ST2, ST4, 900ss i.e., Monster i.e., Monster S4, Cagiva Grand Canyon 2000. 1999 models require a spacer from the 2000 model for clearance, which is included. I'm also including two ($45 value) Nichols flywheel retaining nuts. This all costs roughly $300 new including shipping. This is not new or used. Purchased a long time ago, but never mounted. $225 shipped. Email for pictures. [email protected] Thanks for looking.