Where can you find parts for a 2004 Suzuki Ozark atv?

When you replace the front wheel bearings and the seals, there's two removable parts that the seals ride on to keep the dirt out. These pieces are not sold with the bearing kit and are not sold by the Suzuki dealer seperately. The Suzuki dealer told me I have to buy the whole steering knuckle just to get those two sleeves. $250 just for 4 sleeves is ridiculous. Who can supply me with these parts.|||http://www.bikebandit.com