Why buy new bushings? What is the benefit?
Many advantages can be found over your stock bushings (especially if they’re old!): Urethane bushings have a higher load-bearing capacity, greater tear strength, better compression set, greater abrasion resistance, and better tolerance to greases and oils. Polyurethane is an ideal material for performance suspension bushings, motor and transmission mounts. Additional horsepower, plus size tires, lifted truck suspension or lowered canyon carving street setups all mix with normal atmospheric conditions and undercar grit and grime to stress rubber bushings beyond design limits. Polyurethane bushings are firm enough to control movement and maintain alignment in sway bars, control arms, and other stressed suspension components without the harshness or resonance associated with solid metal suspension bushings.