Yamato Garage S14 rear upper control arms (rucas) are made from stainless steel and feature large oval tubing and a bell head design to make them one of the strongest arms available on the market unlike the multi piece designs more commonly seen. as always our rucas feature qa1 two piece rod ends with a chrome plated ball and heat treated hardware and are powder coated for corrosion resistance. these rucas allow you to adjust the rear camber to fine tune you drift or road race suspension set up.