These adaptor kits are required to enable the lever guards in either carbon or aluminum to fit your specific bike.
Scroll down to find your specific bike.
if your specific bike is not listed there are two universal adaptor kits part number:
KPL302 (Internal diameter 16mm - 17.5mm)
KPL319 (Internal diameter 18mm - 19.5mm)
Lightech - Adaptor Kits for Lever Guards - Ducati - 848 2008-2011/Diavel 2011-2015