Rear Add-A-Pack

Carli progressive-rate Add-A-Pack rear springs are specifically designed to address the harsh rebound of the factory overload spring they replace. When used in conjunction with a Carli Suspension System, they effectively mitigate the impact of medium to large bumps. By replacing the lower overload springs, which are typically one inch thick and do not follow the contour of the rest of the pack, with a mini progressive six-leaf pack, the overall capacity of the truck remains unchanged as determined by the factory springs. However, the progression of the rear spring rate becomes significantly more predictable.
This modification results in a smoother engagement and disengagement of the spring, thereby improving both ride quality and traction.

Additional Information

Carli's six-leaf progressive Add-A-Pack rear springs replace the lower overload leaf with six thinner leafs. It maintains factory load capacity while improving ride quality by effectively mitigating the impact of medium to large bumps.

Product Overview

Carli progressive-rate Add-A-Pack rear springs are specifically designed to address the harsh rebound of the factory overload spring they replace. When used in conjunction with a Carli Suspension System, they effectively mitigate the impact of medium to large bumps. By replacing the lower overload springs, which are typically one inch thick and do not follow the contour of the rest of the pack, with a mini progressive six-leaf pack, the overall capacity of the truck remains unchanged as determined by the factory springs. However, the progression of the rear spring rate becomes significantly more predictable.
This modification results in a smoother engagement and disengagement of the spring, thereby improving both ride quality and traction.

This is a group bundle consisting of:

Image	Qty	SKU	MFR SKU	UPC	Description
	1x	cliAS-FPAP-17-45-DRIVER	AS-FPAP-17-45-DRIVER	883584148630	Carli 17-23 Ford F250/350 4x4 Progressive Add-A-Pack Driver - 4.5in Lift
	1x	cliAS-FPAP-17-45-PASS	AS-FPAP-17-45-PASS	883584149170	Carli 17-23 Ford F250/350 4x4 Progressive Add-A-Pack Passenger - 4.5in Lift

Bundled group items may ship from multiple locations and could have slightly longer transit times if parts are sourced from different warehouses.

Images in this listing may include individual and/or group shots of the products included in the bundle. Please refer to the table to see a breakdown of what is included. Click on a SKU to see individual item details.

For details on the individual components in this bundle, click here.

Fits 2017-23 Ford F250/F350 4×4

Note on Vehicle Configuration

This listing includes the term "driver" or "passenger". Please note that this may refer to a region specific variation based on vehicle configuration (LHD/RHD) or regional preferences. Much of our database relates to US sourced products where "Driver" typically refers to the left-hand side in LHD vehicles, and "passenger" to the right. In RHD vehicles, this terminology is reversed. Review product details carefully for compatibility. Contact support if you have any questions. StreetFX may not accept returns for special order products.

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Product Details

Reference Information