Boost your torque performance with the rear end gears, as this helps to move power from the transmission to your tires. Build more power for highway driving to get your rig up to speed when you are needing to merge quickly. Pair the rear end gears with other high-quality accessories like the F150 leveling kits or F150 off-road bumpers. Ford F-150 Fitments: 2004, 2005, 2006, 2008, 2009, 2010 Ford F150 with 4.6L or 5.4L engines. Submodel Fitments: FX2, FX4, King Ranch, Lariat, Limited, Platinum, STX, XL, XLT. Some Exceptions apply, please see individual product pages for specific fitments.