Using this engine mount kit is straightforward. First, make sure to check if the kit fits your 2006 - 2015 Mazda MX - 5 Miata (NC) with a 2.0L or 2.5L motor. It's a bolt - on installation, but we suggest getting a mechanic or automotive specialist to do it for you. After installation, you'll enjoy better performance driving, as these mounts are built for that purpose. Keep in mind that although the bushings are designed to reduce engine vibration, you may feel a bit of vibration depending on your engine. Don't try to return or swap the mounts after they've been bolted down because once there are bolt impressions, they can't be exchanged. As for maintenance, there's not much you need to do. Just keep an eye on the mounts during regular vehicle check - ups to make sure they're in good condition.