Features: - Fits all 2015-newer S550 Mustangs - Upgrade for BMR's BK051 and BK054, as well as other diff inserts and lockouts on the market - Grade 12.9 hardware for the ultimate in strength - Designed for street performance, drag race, and road race applications - Durable zinc finish - 3-4 hour installation time - Proudly designed in the U.S.A. - Proudly made in the U.S.A. Learn More