Hellwig 3511 LP-35 Load Pro Helper Springs

The Hellwig 3511 LP-35 Load Pro Helper Springs offers the maximum in carrying capacity for your Ford F-250/350/450/550 Super Duty. The Load Pro LP-35 features a Progressive Rate Design that is fully adjustable and can handle the load 24/7. Hellwig's Helper Springs set the industry standard for all other helper springs. Hellwig's Progressive Spring Rate and Fulltime Spring Rate design makes this the workhorse of the Hellwig spring line. Due to the innovative Progressive design, the truck must be loaded, and its spring must be compressed to activate the Hellwig Spring, therefore, as the load increases the Hellwig LP-35 progressively increases its resistance to the load. 

Built from heat treated ASTM 5160 alloy spring steel, the Load Pro Helper Springs increase your vehicles level load carrying capacity up to the manufacturers GVWR. The simple bolt-on design uses common hand tools to provide you with ease of installation. The LP-35 is rated at 3500lbs level load carrying capacity and is not intended to exceed the vehicles Gross Vehicle Weight Rating. Install kit not included, see application details below. 

2011-2026 Ford F-250/350 2WD/4WD SRW (Requires 25301 Install Kit)

2011-2026 Ford F-350/450 2WD/4WD Dually (Requires 25301 Install Kit)

2016-2026 Ford F-350/450/550 Cab & Chassis 2WD/4WD (Requires 25301 Install Kit)

The required mounting kit is sold separately. See Below. 

Do not use w/factory overload contact springs or use 9703