Locate Yamaha YZ490 parts for model years .These popular vendors also feature plenty of genuine Yamaha products, aftermarket YZ490 parts, official and unofficial Yamaha riding clothes in all sizes including youth boy's and girl's sizes, and much more. Many of their items are priced below what you would pay at your local Yamaha dealer.
There are almost always choices between the OEM and the aftermarket products. OEM is essentially the recommended replacement part originally designed for your dirt bike. Motorcycle manufacturers like Yamaha will always recommend OEM replacement parts. However, there are instances where the aftermarket products have actually improved on original engineering. Word of mouth and past experience with a certain aftermarket brand are two key factors in choosing between the originals or the aftermarkets for your dirt bike.