LP-35 Load Pro Series™ Rear Helper Springs (9640) by Hellwig®. Constant Load Leveler. 4 Leafs Stack. This is a set of secondary helper leaf springs designed to add up to 2,500 pounds of load support to restore comfort and stability at the rear of your “1/2-ton” truck. The 3-leaf design progressively adds support as OEM leaf springs become loaded and compressed. Crafted from heat-treated ASTM 5160 alloy spring steel for maximum strength and resilience, these feature a spring rate that becomes firmer as pressure increases. Recommended for heavy hauling, work truck use, or pulling a 5th-wheel RV trailer, these maintain proper ride height and prevent original springs from sagging due to sustained load compression. Drilling may be required.
Valid Till:
Fitment
| Year | Make | Model | Driveline | Engine |
|---|---|---|---|---|
| 1999-2002 | Ford | E-450 Econoline Super Duty | 4 X 2 | GAS |
| 2000-2002 | Ford | E-450 Econoline Super Duty | 4 X 2 | CNG |
| 2000-2002 | Ford | E-450 Econoline Super Duty | 4 X 2 | DIESEL |
| 2001 | Ford | Motorhome | ||
| 2003-2004 , 2010-2016 | Ford | E-450 Super Duty | 4 X 2 | CNG |
| 2003-2010 | Ford | E-450 Super Duty | 4 X 2 | DIESEL |
| 2003-2019 | Ford | E-450 Super Duty | 4 X 2 | GAS |
| 2009-2016 , 2019 | Ford | E-450 Super Duty | 4 X 2 | FLEX |
| 2010-2016 | Ford | E-450 Super Duty | 4 X 2 | LPG |
| 2012 | Ford | F-450 Super Duty | 4 X 2 | GAS |
| 2012 | Ford | F-450 Super Duty | 4 X 4 | GAS |
| 2018 | Ford | E-450 Super Duty | 4 X 2 |
Features
- Secondary leaf springs take weight off overly compressed OEM leaf springs
- Restore proper ride height, comfort and stability to the rear of your full-size truck or van
- Recommended for heavy hauling, work truck use, or pulling a 5th-wheel RV trailer
- Crafted from heat-treated ASTM 5160 alloy spring steel for maximum strength and resilience
- Progressive spring rate is fully adjustable
- Prevents leaf spring from sagging due to sustained load compression
- Helps reduce bouncing at the rear of vehicle when towing
- Requires mounting hardware to accommodate 2.53 or 33 wide OEM leaf springs (sold separately)
- Drilling may be required for installation
- Manufactured in the United States
Components
See DirectonsImportant Notes
Time is of the essence. Please call us to verify that this product is in stock.
Fitment Notes
- 97-18 Ford E40, E-450 Fits Vehicles with 5 Leaf Stack (For air bags on lifted vehicles using a non-tapered lift block, use P/N 4822 spacer for a 2"" rear lift and P/N 4824 spacer for a 4"" rear lift)
ATTN State of California Consumers warning: Cancer and Reproductive Harm
Hellwig 9640 Special Design Helper Spring Kit
- SKU : BFDQ9640
- Part Number : 9640
$986.00
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