The SF Challenge is available in white with blue or red lip, black with yellow, red or blue lip. The P1 Racing II Plus wheels offer cutting edge styling while maintaining race worthiness, with sophisticated machined outer rim and the trademark 6-spoke lightweight design. P1 Racing SF wheels are offered with budget minded racers in mind. Its light weight, high-performance design makes it durable enough for both track and street duties. The P-1 Racing QF wheel utilizes a unique forging technology that does not compromise strength and rigidity for a light-weight design.