Swapping out your gears doesn't have to be a hassle, especially when you've got our expansive selection of complete gear packages right here at Stage 3! These kits combine front and rear gear sets and bearing kits for a near-complete differential overhaul that improves reliability and gets you the differential performance you're looking for. Ford Super Duty Fitments: 2008, 2009, 2010 Ford F250 & F350 6.4L Submodel Fitments: FX4, King Ranch, Platinum, Lariat, XLT, XL Some Exceptions apply, please see individual product pages for specific fitments.