Hellwig Pro-Series Helper Springs

The Hellwig Pro-Series Helper Springs represent the flagship load-assist solution from one of the most trusted names in suspension engineering. Designed to work in conjunction with your factory leaf spring pack, the Pro-Series line increases a truck's or van's level load-carrying capacity up to the vehicle's Gross Vehicle Weight Rating (GVWR) — delivering the control, stability, and ride quality needed for serious hauling and towing applications.

At the heart of the Pro-Series is a progressive rate spring system that automatically increases resistance as load is applied, preventing squat, sag, and tail-dragging under demanding conditions. When unloaded or lightly loaded, the springs remain compliant for a comfortable everyday ride — then progressively stiffen as cargo or trailer weight increases, providing dynamic, load-sensitive support at all times.

Key Features:

• Progressive rate spring design — automatically increases resistance as load grows, delivering dynamic support that prevents sag and tail-drag
• "Silent-Ride" polyurethane stability blocks — positioned between the main and helper springs to dampen noise, resist body roll, and smooth overall ride quality
• Heat-treated ASTM 5160 alloy spring steel construction — hot-formed for exceptional strength and long-term durability
• Fully adjustable heavy-duty U-bolts — allow fine-tuning for side-to-side leveling across varying hauling and towing requirements
• Patented over-axle bolt-on design — installs at factory mount locations using common hand tools, no drilling required
• Plated and powder-coated components — corrosion-resistant finish for lasting protection in all weather conditions
• Complete kit packaging — every kit includes springs, all necessary mounting hardware, and step-by-step installation instructions
• ISO 9001-certified and USA-made — manufactured at Hellwig's Visalia, California facility
• Backed by Hellwig's limited lifetime warranty

The Pro-Series is Hellwig's most capable and versatile helper spring line, purpose-built for trucks and vans that regularly haul heavy cargo, tow trailers, or carry campers. Each application-specific kit is engineered to install easily in a home driveway or professional shop — no special tools required.