This is a brand new ,genuine APE manual camchain tensioner,ape camchain tensioners replace the unreliable automatic items fitted to most Japanese machines. an absolute must for any hard ridden or raced bike,often also cures a rattly chain because of a greater range of adjustment. APE  are the original USA made tensioners,do not confuse with recent cheaper copies!  see other listings we have for more applications to fit most Japanese 4 cylinder machines.