LP-35 Load Pro Series™ Rear Helper Springs (9645) by Hellwig®. Progressive Load Leveler. 11 Leafs Stack. This is a set of secondary helper leaf springs designed to add up to 3,500 pounds of load support to restore comfort and stability at the rear of your “3/4 ton” or “1 ton” truck. The 2-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. Requires Mounting Kit for installation (sold separately). Drilling may be required.
Valid Till:
Fitment
| Year | Make | Model | Driveline | Engine |
|---|---|---|---|---|
| 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.
Mount kit Sold Separately
Fitment Notes
- 97-18 Ford E40, E-450 Fits Vehicles with 11 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 9645 Special Design Helper Spring Kit
- SKU : BFDQ9645
- Part Number : 9645
$993.10
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