The new 2015 S550 Mustang is finally here. The new 2015 Mustang GT has been totally redesigned from the previous 2011-2014 models. An entirely new chassis, independent rear suspension (IRS), double ball joint front suspension, cockpit style interior and retro exterior styling we're sure that this new mustang will be the best mustang produced so far. Lethal Performance is dedicated to providing the best performance parts and accessory selection to our customers and are working closely with all of our manufacturers and vendors to make these products available to you as soon as possible.