Prothane Motor Mount insert kit fits in the factory "dog-bone" mount under the engine/transaxle assembly to limit movement. Helps to reduce wheel hop on a hard launch. A must for drag racing. If you have ever "wound out" first gear and "banged" second, you have probably heard a nasty "thud" under the car. This mount helps to eliminate that. Red in color. Fits Focus with Zetec, Duratec up to 2007, and SVT engines.