Give your 2017-2019 Chevy/GMC 6.6L L5P Duramax the Helper Springs you need when towing heavy cargo. Available in multiple load capabilities, these spring packs install with u-bolts, or other hardware which secures it to the existing suspension components on your truck. Helper springs mount on top of the original leaf spring pack and work in conjunction with the factory leaf springs. The enhanced support to the original spring pack helps to provide the vehicle with added stability up to the stock GVWR. Shop today and upgrade your suspension with top-notch brands such as SuperSprings and Hellwig.