Benefits: Fewer engine movements, eliminating stress on the engine top mount. Slightly better handling. Very easy to install once they are pressed into the factory bracket. Cons: Increased vibration, especially between 900-1100 RPM and reverse. It's annoying when the car stops and gets stuck in traffic. Bottom line: if you have power upgrades and need stronger mounts, you probably won't be interested in increased cabin resonance, so this is probably for you. For daily drivers who value quietβ¦