Add assistance to your factory overload springs with Hellwig's Contact Helper Springs. Get help sooner with the contact helper, as the vehicle is loaded the Hellwig contact helper spring connects with the factory contact pads sooner providing better support and less sag for heavy loads. When in contact, the extra Hellwig leaves stiffen the overload springs decreasing the sag of the vehicle in a loaded condition. Hellwig contact overload assist springs mount directly to the factory contact springs for easy install and better load support to increase the truck's level-load carrying capacity. In normal use, they leave performance unchanged.. Contact Helper Spring Ford 88-15 F250/350 Super Duty; 20-23 Chevrolet Silverado/GMC Sierra 3500 HD 2wd/4wd Pickup SRW; 21-23 Ram 4500/5500 Cab and Chassis. All MUST have factory contact overload leaf springs.. Contact Helper Spring Ford 88-15 F250/350 Super Duty, 20-23 Chevrolet Silverado/GMC Sierra 3500 HD 2wd/4wd Pickup SRW, 21-23 Ram 4500/5500 Cab and Chassis. All MUST have factory contact overload leaf springs.. Hellwig 20-21 Chevy Silv 3500HD 2/4WD Contact Helper Spring Kit - 2 Additional Leaves. Additional leaf/leaves to add to the factory contact helpers. Increases rate when loaded but factory ride when empty. Limited Lifetime Warranty. Contact Helper Spring. CONTACT HELPER SPRNG. Leaf Helper Spring. Easy installation. Hellwig 9703

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