The excellent APEX race wheels are made to very high standards and are lightweight to enhance performance and handling.
APEX wheels are flow-formed. Flow-forming combines casting and forging technologies to produce a strong and lightweight wheel with about 80-90% of the weight savings of a fully forged wheel, but at 1/3 the cost. Flow-forming is the name used for the process that forms the final barrel shape. The wheels come out of the original mold with a narrow and extremely thick bell like barrel. A machine with two high pressure rollers compress and stretch the metal into its final shape. This machine/step is the same that fully forged wheels use to form their barrel. This gives the wheel strength where it really maters, and weight savings in the area that impacts rotational mass the most.