Fits all Efi Yamaha YFZ450Rs from 2009-2022
Made from 7075 lightweight aluminum
Prolong engine life by pulling metal filings out of the oil
Ultra powerful magnets
Comes washer sealing surface
We have used these for years to protect engine life.
12mm head same as oem
Anodized Red
Purchase 2 of doing both plugs on the yamaha yfz450r.