The stock strut rod bushings that come installed on the vehicle are made of rubber. While rubber may be good at absorbing and redirecting vibrations, it does not last very long. Prone to cracking and deteriorating, rubber is guaranteed to eventually wear. Moog's premium rubber strut arm bushings will restore your strut arms to their original feel and performance. The strut arm ensures a quiet operation and smooth vehicle ride by replacing original equipment bushings with Moog's bushings.