Take advantage of another one of my mis-orders - this time for genuine Yamaha LH (disc side) wheel spacers.I meant to have ordered the plain "collars" for the RH side on the white TTRs but bought RH ones by mistake
If your existing spacer is grooved where the oil seal fits then it will allow dirt and water in and your bearings will not last long. Replace the spacer and save money and effort in the long run.