Molded composite rear lower suspension arms with 2-holes for optional setting. Inner position is used for increased steering, outer position is used for more stable handling. Standard hard-composite mixture arms (labeled “H”) for rubber-tire racing. The specially-formulated composite material allows for a very light yet very durable suspension arm that can withstand the rigors of high-performance racing with rubber tires. Can be also used for foam tires. Fits XRAY T2, T3 T4 cars.