There was some tribal knowledge floating around regarding the failure of some 1996 KTM rotors. Basically, the rotor magnets would disbond from the flywheel and chew the stator to bits while circulating broken magnet pieces in your bearings (not good). The parts were silently upgraded somwhere back in 96-97 time frame. I never knew what the visual difference was to be able to identify the good one from the bad one. Thanks to help from Tom S who shared pictures of his destroyed rotor, we now know how to visually identify them. Mine had not self destructed (yet). This is what they look like: View attachment 76225 It only takes removing your ignition sidecover and replacing one gasket to have a look-see. The difference is obvious when you see them. The old style has exposed magnets with glued joints. The new part has the magnets enclosed behind sheet metal. I don't think the part numbers ever changed. I ordered a new one for my 96 Duke and those are the parts side-by-side before I installed the new one. This was 'known' for 1996 LC4's but may apply to late 95's or early 97's. Be safe instead of sorry. Don't wait for it to destroy your engine.