Does any one know what type of Aluminum is used in building motorcycle frames? I realize that alot of these are cast in sections, but some are still welded together. If anyone knows what a Honda CRF 250 or 400 is (dirtbike), take a look at the all Alum. Frame. Obviously welded together. Just wondering if anyone can give me any insight on what material or process they use. Thanks
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Motorcycle Alum. Frames?