New wheel bearings
I was going to repack my rear wheel bearings and found one of them to be pretty notchy. I ordered a new kit with bearings and seals (Pivot Works). I also ordered new spacers (All Balls). My old spacers were quite worn, worn enough that the seals likely weren't doing anything. The new spacers are aluminum with a steel ring where the seal rides. Hopefully the harder surface will hold up better than the all aluminum spacers.
I also took the time to fill the new bearing with some synthetic grease. The bearings are standard 6005 units designed for high speed operation. The amount of grease they come packed with is probably great for 5000 rpm. For 400ish rpm on a motorcycle, I doubt the grease gets that hot so whats a bit more goo being sheared around in the bearing.
'03 KTM 450EXC
"If you know what you're doing, then you aren't learning anything." - A. Lincoln