Whiteline Plus 14+ Ford Mustang GT500/S550 Crossmember Mount Insert Kit

The crossmember mount inserts in this Whiteline kit are made from a synthetic elastomer formulation that resists oil, grease, ozone, and weathering. These aren't a full replacement for your factory bushings, but rather inserts designed to work with them. They eliminate 'lost motion,' which is basically extra movement in the rear crossmember that can make the car feel less precise, especially when cornering hard.

By reducing this misalignment and movement, you'll notice a more direct and positive feel from the rear of your Mustang during spirited driving. The inserts have internal grease reservoirs that provide continuous self-lubrication, and they come with a special molybdenum disulfide-based grease for extended life. Whiteline includes a detailed installation guide, making this a manageable job for a DIYer looking to improve their car's handling.