Manufactured from 95A durometer red polyurethane, with. 0125 6061-T6 scuff plates, that help ensure even weight distribution into the rubber. These motor mounts help reduce engine movement under acceleration. This results in better road feel, less to no wheel hop, quicker shifts and lowed ETs. They cause more vibration than stock, but significantly less than solid or Delrin mounts. This is a Level Zero Motorsports product and is manufactured in North America. Item must be in original condition for this guarantee to apply. If there are any defects in the workmanship of our products that result in a failure of our product at any time, you may send it back for a free replacement part, no questions asked.