RETRUE Air Spring Bag Suspension Kit fit for 2015 2016 2017 2018 2019 2020 2021 Ford F150 up to 5,000 lbs. Of Load Leveling Capacity Ride-Helper. Fully adjustable air springs to level your vehicle when towing or hauling a heavy load for a safe comfortable ride. Up to 5,000 pounds of load leveling capability. Easy to install with included detailed instructions. Frame Drilling Required: No. Fitment details listed in the product description. Absorbs road shock and adjusts to varying loads for ideal ride conditions. International Buyers – Please Note. If you are dissatisfied for any reason, please do not be quick to leave negative/neutral feedback. We work hard to make sure EVERY CUSTOMER 100% SATISFIED and resolve any problem for you. We will reply to you as soon as possible.