4.0 Inch X-Factor Suspension System 2011-2016 F250/F350 Diesel Rock Krawler Drivetrain & Differentials - Axles & Differentials - Differential Drop Kit 40 percent greater flow area

40 percent greater flow area compared to stock

1964-1966 Oldsmobile Dynamic 88

Yukon heavy duty pinion supports feature upgraded materials and a larger design than OEM to provide heavy duty strength in racing and off-road applications Ford 9 inch pinion Support

Chevrolet Caprice (1978 - 1981)

Works with all common aftermarket and factory Throttle bodies and intakes

4.0 Inch X-Factor Suspension System 2011-2016 F250/F350 Diesel Rock Krawler Drivetrain & Differentials - Axles & Differentials - Differential Drop Kit 40 percent greater flow areaRock Krawler 4. 0 X Factor Suspension System 2011 2016 F250 F350 (Diesel) The RK Suspension 4. 0 Lift Height X Factor System for the Ford Super Duty is expertly engineered to elevate both ride quality and performance, making it the ultimate upgrade for your everyday workhorse or adventure vehicle. Every component is precision crafted in house to optimize factory geometry, ensuring enhanced off road stability for those who crave the thrill of the