Ducati 916 lightweight flywheel. Composite aluminium and steel flywheel for use on bikes using a P8 Magneti Marelli computer. Flywheel weighs 707 grams. I was using this on a mid-1990's Ducati 916. I believe this also fits Ducati 851, 888, 916SP and 916SPS, but please check carefully if you have any of these.