Hellwig Special Design Helper Spring Kits

The Hellwig Special Design Helper Spring Kit series is a professional-grade rear suspension solution engineered to restore and enhance load-carrying capability for trucks and SUVs. Designed to work in conjunction with the factory leaf spring pack, these kits effectively increase a vehicle's level load rating—reducing rear-end sag and improving stability when hauling cargo or towing trailers.

Available in multiple configurations tuned to specific vehicle suspension geometries, this series covers a wide range of hauling requirements. Whether the application is a work truck, a recreational hauler, or a daily driver that occasionally tows, the Special Design series delivers real-world performance improvements without sacrificing ride comfort when running empty—thanks to progressive-rate leaves that engage only under load.

Key Features:

• Made in the USA — manufactured with heat-treated ASTM 5160 alloy spring steel at Hellwig's ISO 9001-certified facility in California's Central Valley
• Progressive load support — helper leaves engage only under load, preserving unloaded ride quality
• Adjustable tension — heavy-duty U-bolts allow tuning to match specific load requirements, adjustable with common hand tools
• Simple bolt-on installation — designed for installation with common hand tools; all necessary mounting hardware included
• Complete kit — ships with powder-coated and plated components, spring leaves, heavy-duty hardware, and installation instructions
• Zinc-plated hardware and brackets — corrosion-resistant finish for long service life
• Limited lifetime warranty — backed by Hellwig's commitment to quality manufacturing
• Improves vehicle stability, reduces trailer sway, and helps maintain proper headlight aim under load

About Hellwig Products: Founded in 1946 and a founding member of SEMA, Hellwig has remained a family-owned, American manufacturer for over 75 years. All steel components are produced domestically at their ISO 9001-certified California facility—reflecting a longstanding commitment to quality at a time when many competitors have moved production overseas.