Give your 2004.5-2005 Chevy/GMC 6.6L LLY Duramax the Helper Springs you need when towing heavy cargo. Most helper springs are located on top of the factory leaf spring pack and work in conjunction with the OE springs. The added support to the factory spring pack increases the load rating up to the stock gross vehicle weight rating. Available in different load capacities to help fit your needs, these springs install easily using u-bolts or other hardware to your existing suspension components. SuperSprings and Hellwig are just some of the manufacturers you can find to help you get the most out of the suspension in your truck.
