FOR SALE. Kawasaki z 400s airbox Home › Forums › ‘How To’ on the site › FOR SALE. Kawasaki z 400s airbox Tagged: z 400s airbox. This topic contains 0 replies, has 1 voice, and was last updated by Victor Hugh Adlard 9 months, 2 weeks ago. Viewing 1 post (of 1 total) Author Posts 3rd November 2017 at 1:09 pm #23390 Victor Hugh AdlardParticipant Kawasaki z 400s airbox early 70s ? does anyone want this for a nominal sum? its metal, has an old filter inside, surely someone wants it.I don`t want to scrap it.On e bay or email@example.com. Author Posts Viewing 1 post (of 1 total) You must be logged in to reply to this topic.