Check with speedwerks, at one time they had white ones, dont remember sizes they had.Who has changed the idlers or axle wheels on their sled for another type or colour? I am thinking about going with white but can't find one I like and Yamaha doesn't have one available here.I wouldn't mind going aluminum but it would cost a small fortune to buy them all so it'll likely be plastic I get.Anyone know of a decent wheel with a good variety of colours available?