Hellwig EZ-990 Helper Spring Kit - Medium-Duty Leaf Spring Load Assist

The Hellwig EZ-990 is a medium-duty leaf spring helper spring system engineered to restore load-carrying confidence and eliminate rear-end sag on trucks and SUVs used for towing and hauling. Built in Hellwig's California facility to the same rigorous standards as their heavy-duty suspension lineup, the EZ-990 series delivers professional-grade load management in a cost-effective, fully bolt-on package.

Premium American-Made Construction:

• Manufactured from heat-treated ASTM 5160 alloy spring steel — hot-formed for superior strength and long-term durability
• Powder-coated and plated components resist corrosion and harsh environmental conditions
• Rated up to 2,000 lbs. level load carrying capacity for consistent, dependable performance
• Variable-rate spring leaves engage progressively under load — ride quality is unaffected when the vehicle is unloaded
• Backed by Hellwig's limited lifetime warranty and over 75 years of American suspension manufacturing expertise

Fully Adjustable, Hassle-Free Design:

• Straightforward bolt-on installation using common hand tools — no special equipment, compressors, or air systems required
• Fully adjustable via included heavy-duty U-bolts to fine-tune support for your specific load requirements
• Can be adjusted independently side-to-side to accommodate uneven or off-center loads
• Re-adjustable at any time as towing and hauling needs change
• Mounts directly to factory axle U-bolt plates for a clean, secure fit

Complete Kit Contents:

• Helper spring assemblies with all necessary mounting hardware
• Heavy-duty adjustable U-bolts for precise load tuning
• Comprehensive installation instructions for straightforward setup

Once installed and adjusted, EZ-990 helper springs deliver improved stability, reduced body roll, and enhanced load control for a safer, more confident driving experience — whether hauling cargo or towing a trailer. As a founding member of SEMA and a family-owned American manufacturer since 1946, Hellwig Products brings decades of proven suspension innovation to every kit in the EZ-990 lineup.