Molded-composite remaining back upright features important 1° of outboard toe-in to boost the rotation with this car in corners and present a wide berth to suspension system system system geometry alterations in serious crashes. Features two roll center jobs with the back upright. Accommodates small but robust 5x10 ball-bearings for minimized unsprung fat.
moderate rigidity (labeled M) specially optimized for rubber-tire battle.
Use with matching right-side right back upright 303351. May be also great for foam tires.
