The GKTECH 350z/Infiniti G35 front lower arm inner spherical bushings are designed to replace the factory OEM rubber bushing which needs regular replacement. The OEM front lower arm pivots a significant amount throughout suspension travel which causes premature wear. We have chosen to use a common (COM10T) spherical bearing which is PTFE lined and self lubricating for increased longevity. Simply press out the OEM bushing and press the replacement unit in its place. Watch our install video below showing just how much the front lower arm does pivot. Sold as a pair Vehicle Compatibility: - Nissan Z33 350z - Infiniti G35 Will this fit my car? We can only confirm fitment for the vehicles listed above under "vehicle compatibility". If your car is not listed there, then we don't know if it will fit. Is there anything else needed for installation? There is not. Simply remove the OEM bush and press this complete unit in its place. Can I install this myself? If so how long will installation take? Yes, provided you have general mechanical knowledge installation is relitively straightforward. Installation time should be around 30 minutes. However, being a suspension component we recommend only a trained professional to install this product Do you carry spare parts for this product? Yes we carry the following spare parts for this product; Replacement Com10T Spherical Bearing - Spare part can be found here