This titanium sleeve was designed to eliminate case breakage due to starter kickback from high compression motors or low battery voltage. See product details tab for installation instructions.
Remove right hand fairing, remove idler gear cover and gear, remove starter clutch cover and reduction gear (this is were the sleeve goes). Install case protector with bevel inside, use a 20mm socket and tap down until flush. Important: Case Saver MUST BE FLUSH or slightly past case ear, if your case is already broken this part will not work.