This (LHS) Swingarm Protector is for the Kawasaki Ninja H2 '18-, H2 SX (SE) '18-, H2R '18- models.  

The R&G swingarm protector provides protection for vulnerable rear end components in the event of a crash, drop or slide. Replaceable High-Density Polyethylene (HDPE) bobbins are used for superior impact and abrasion protection that helps slow the motorcycle to a smooth, controlled stop. This essential protector will keep valuable components off the ground to prevent some seriously expensive repairs after a fall. Installation is simple with no permanent modification to the bike needed.