Carli Suspension AS-FPAP-17-LVL-DRIVER Progressive Add-A-Pack Driver Side Leaf Spring

The Carli Suspension Progressive Add-A-Pack is a premium rear suspension upgrade designed to transform the harsh ride quality of 2017-2026 Ford F250 and F350 4x4 trucks. This driver-side component features a proprietary six-leaf progressive design that replaces the factory lower overload spring with multiple thinner gauge leaves, effectively eliminating the harsh rebound characteristics of the stock setup.

Key Features:

• Six-leaf progressive design built exclusively by Deaver Spring Manufacturing in the USA
• Replaces the factory 1-inch thick lower overload leaf that doesn't follow the main pack contour
• Maintains original OEM load capacity while dramatically improving ride quality
• Provides 1/2-inch to 1-inch lift when paired with Carli leveling systems
• Eliminates factory block for improved suspension geometry
• Includes bump stop drops, U-bolts, and all necessary mounting hardware
• Smooth engagement and disengagement for enhanced traction and control

Performance Benefits:

• Significantly more predictable rear spring rate progression
• Effectively mitigates medium to large bump impacts when used with Carli suspension systems
• Smoother loaded ride quality compared to factory configuration
• Improved overall ride comfort without sacrificing capability

Important Note: This driver-side add-a-pack is sold individually and is part of the complete CS-FPAP-LVL-17 kit (which includes both driver and passenger sides). While recommended for F250 applications, Carli notes that F350 trucks with their stiffer factory spring packs may experience limited improvement and full replacement leaf springs are recommended for optimal F350 ride quality.

Note: This product contains chemicals including arsenic, which is known to the State of California to cause cancer. For more information, visit www.P65Warnings.ca.gov.