The Forgeline SO3S is a classic five-spoke 3-piece design with stepped-lip competition rim halves. Each SO3S wheel is built with true forged 6061-T6 aluminum centers, heat-treated aluminum rim shells, and aircraft-quality stainless steel ARP fasteners. They feature a standard powder coated center finish and polished outer lip.

The SO3S is available in sizes ranging from 19x8.0 to 21x13.0. And since each wheel is built to order, Forgeline can offer special features like custom offsets and a large choice of finish combinations.