Molded-composite right backside upright features integrated 1° of outboard toe-in to enhance the rotation of car in corners and prevent suspension system geometry alterations in severe crashes. Features two roll center roles at the top of the back upright. Accommodates tiny but robust 5x10 ball-bearings for minimized unsprung fat.
Medium rigidity (labeled M) especially optimized for rubber-tire race.
Use with matching left-side rear upright 303361. Are additionally used for foam tires.
