ATV Four Play’s Polaris XP1K Turbo S A arms High Ground Clearance design Will only accept the Keller Performance Mega ball joint. Ball joints sold separately. Uses OEM style bushings. But will accept soon to be released aftermarket bushings too. Constructed using Plymouth tubing PROMOLY DOMESTIC 4130 chromoly steel tubing. 4130 tubing is 1.5″ x .095 and rear upper tubing is 1.5″ x .188 wall. Professionally TIG welded. Lower A arm weighs 13.4# each. Upper A arm weighs 13.2# each. Please note due to size. Shipping will require (2) separate boxes. Lower A arm is our hybrid style using tubing and plates. The bottom of the lower a arm uses a .125 steel plate for reinforcement and acts as a skid plate. Optional Lower A arm to be fully plated top and bottom. Please call to discuss.