Product features Includes components to add spherical washer feature of the MMST-7 design to previously installed MMST-3 bushings. Center-drilled (not offset) design maintains best bumpsteer geometry for Mustangs with the stock k-member. Unique, precision-machined spherical design prevents the rack from twisting when solidly mounted. Fits both power and manual steering racks. Plated steel construction. Fits stock k-members with 12MM rack mounting bolts only. Does not fit MM K-members or other aftermarket k-members.Learn More