Towing heavy loads means having a disproportional amount of weight pulling down the rear of your truck. Your 2015-2020 F150 is no slouch when it comes to towing and hauling, but even the mightiest of F150s can start to see some sag and instability well before their GVWR or GCWR. When that happens, turn to a set of F150 helper springs or extended bump stops to help you and your truck out. Our handy kits are easy towing upgrades for the F150 that help prevent sag, sway, roll, and general instability when you're towing or hauling heavy. Your truck will be able to stay level, even with added ride height from a lift kit or leveling kit. To continue to make towing easier on your F150 going forward, make sure to check out our Sway Bars and Tow Straps & Recovery to go with your new helper springs. Ford F-150 Fitments: 2015, 2016, 2017, 2018, 2019, 2020 Ford F150. Submodel Fitments: FX2, FX4, King Ranch, Limited, Platinum, Lariat, Tremor, Sport, STX, XLT, XL. Some exceptions apply, please see individual product pages for specific fitments.