Replace worn rear knuckle cross axis ball joints on the IRS Mustang Cobra with xAxis™ joints from SPC Performance. SPC’s cross axis ball joints feature highly polished electro-less nickel plated balls, corrosion and wear resistant moly inpregnated nylon races, and dust boots to keep contaminants out & ensure long life. xAxis Joints come pre-greased and are designed to be maintenance free. This kit includes four (4) xAxis joints and press tool adapters to service a complete rear end.

These joints are pressed into the stub axle, upper and lower.