Rear Fender "Perma-Nuts" replace OEM rear fender t-nuts number 92210-1635 on 2019-current KX450 and 2021-current KX250 models. Propriety design ensures nut will press into place and does not fall out. Use in place of Kawasaki Part Number 92210-1635 The term Perma-Nut is trademarked by Bolt Motorcycle Hardware