Molded-composite right backside upright features integrated 1° of outboard toe-in to boost the rotation with this specific car in corners and avoid suspension system system geometry alterations in severe crashes. Features two roll center functions towards the top from the back upright. Accommodates little but robust 5x10 ball-bearings for minimized unsprung fat.
moderate rigidity (labeled M) particularly optimized for rubber-tire battle.
use with matching left-side back upright 303361. Normally employed for foam tires.