Radiator cap in CNC 6061 anodised aluminum, adaptable without modification on the following YAMAHA models : MT-09 FZ-09, MT 09 FZ 09 STREET RALLY and TRACER-900 FJ-09 from 2013 to 2019 (note that the radiator cover is not visible on FJ 09) Will install on your OEM radiator, no need to replace or modify it.