Molded-composite left rear upright features integrated 1° of outboard toe-in to improve the rotation associated with the vehicle in corners and stop suspension geometry changes in serious crashes. Features two roll center jobs on top regarding the rear upright. Accommodates little but robust 5x10 ball-bearings for minimized unsprung fat.
rough rigidity (labeled H) especially optimized for foam-tire racing.
Use with matching right-side back upright 303353. May be also useful for rubber tires.